Returns the callbacks Resource.
Returns the stepEntries Resource.
cancel(name, body=None, x__xgafv=None)
Cancels an execution of the given name.
Close httplib2 connections.
create(parent, body=None, x__xgafv=None)
Creates a new execution using the latest revision of the given workflow. For more information, see Execute a workflow.
deleteExecutionHistory(name, body=None, x__xgafv=None)
Deletes all step entries for an execution.
exportData(name, x__xgafv=None)
Returns all metadata stored about an execution, excluding most data that is already accessible using other API methods.
get(name, view=None, x__xgafv=None)
Returns an execution of the given name.
list(parent, filter=None, orderBy=None, pageSize=None, pageToken=None, view=None, x__xgafv=None)
Returns a list of executions which belong to the workflow with the given name. The method returns executions of all workflow revisions. Returned executions are ordered by their start time (newest first).
Retrieves the next page of results.
cancel(name, body=None, x__xgafv=None)
Cancels an execution of the given name.
Args:
name: string, Required. Name of the execution to be cancelled. Format: projects/{project}/locations/{location}/workflows/{workflow}/executions/{execution} (required)
body: object, The request body.
The object takes the form of:
{ # Request for the CancelExecution method.
}
x__xgafv: string, V1 error format.
Allowed values
1 - v1 error format
2 - v2 error format
Returns:
An object of the form:
{ # A running instance of a [Workflow](/workflows/docs/reference/rest/v1/projects.locations.workflows).
"argument": "A String", # Input parameters of the execution represented as a JSON string. The size limit is 32KB. *Note*: If you are using the REST API directly to run your workflow, you must escape any JSON string value of `argument`. Example: `'{"argument":"{\"firstName\":\"FIRST\",\"lastName\":\"LAST\"}"}'`
"callLogLevel": "A String", # The call logging level associated to this execution.
"createTime": "A String", # Output only. Marks the creation of the execution.
"disableConcurrencyQuotaOverflowBuffering": True or False, # Optional. If set to true, the execution will not be backlogged when the concurrency quota is exhausted. The backlog execution starts when the concurrency quota becomes available.
"duration": "A String", # Output only. Measures the duration of the execution.
"endTime": "A String", # Output only. Marks the end of execution, successful or not.
"error": { # Error describes why the execution was abnormally terminated. # Output only. The error which caused the execution to finish prematurely. The value is only present if the execution's state is `FAILED` or `CANCELLED`.
"context": "A String", # Human-readable stack trace string.
"payload": "A String", # Error message and data returned represented as a JSON string.
"stackTrace": { # A collection of stack elements (frames) where an error occurred. # Stack trace with detailed information of where error was generated.
"elements": [ # An array of stack elements.
{ # A single stack element (frame) where an error occurred.
"position": { # Position contains source position information about the stack trace element such as line number, column number and length of the code block in bytes. # The source position information of the stack trace element.
"column": "A String", # The source code column position (of the line) the current instruction was generated from.
"length": "A String", # The number of bytes of source code making up this stack trace element.
"line": "A String", # The source code line number the current instruction was generated from.
},
"routine": "A String", # The routine where the error occurred.
"step": "A String", # The step the error occurred at.
},
],
},
},
"executionHistoryLevel": "A String", # Optional. Describes the level of the execution history feature to apply to this execution. If not specified, the level of the execution history feature will be determined by its workflow's execution history level. If the value is different from its workflow's value, it will override the workflow's execution history level for this exeuction.
"labels": { # Labels associated with this execution. Labels can contain at most 64 entries. Keys and values can be no longer than 63 characters and can only contain lowercase letters, numeric characters, underscores, and dashes. Label keys must start with a letter. International characters are allowed. By default, labels are inherited from the workflow but are overridden by any labels associated with the execution.
"a_key": "A String",
},
"name": "A String", # Output only. The resource name of the execution. Format: projects/{project}/locations/{location}/workflows/{workflow}/executions/{execution}
"result": "A String", # Output only. Output of the execution represented as a JSON string. The value can only be present if the execution's state is `SUCCEEDED`.
"startTime": "A String", # Output only. Marks the beginning of execution. Note that this will be the same as `createTime` for executions that start immediately.
"state": "A String", # Output only. Current state of the execution.
"stateError": { # Describes an error related to the current state of the Execution resource. # Output only. Error regarding the state of the Execution resource. For example, this field will have error details if the execution data is unavailable due to revoked KMS key permissions.
"details": "A String", # Provides specifics about the error.
"type": "A String", # The type of this state error.
},
"status": { # Represents the current status of this execution. # Output only. Status tracks the current steps and progress data of this execution.
"currentSteps": [ # A list of currently executing or last executed step names for the workflow execution currently running. If the workflow has succeeded or failed, this is the last attempted or executed step. Presently, if the current step is inside a subworkflow, the list only includes that step. In the future, the list will contain items for each step in the call stack, starting with the outermost step in the `main` subworkflow, and ending with the most deeply nested step.
{ # Represents a step of the workflow this execution is running.
"routine": "A String", # Name of a routine within the workflow.
"step": "A String", # Name of a step within the routine.
},
],
},
"workflowRevisionId": "A String", # Output only. Revision of the workflow this execution is using.
}
close()
Close httplib2 connections.
create(parent, body=None, x__xgafv=None)
Creates a new execution using the latest revision of the given workflow. For more information, see Execute a workflow.
Args:
parent: string, Required. Name of the workflow for which an execution should be created. Format: projects/{project}/locations/{location}/workflows/{workflow} The latest revision of the workflow will be used. (required)
body: object, The request body.
The object takes the form of:
{ # A running instance of a [Workflow](/workflows/docs/reference/rest/v1/projects.locations.workflows).
"argument": "A String", # Input parameters of the execution represented as a JSON string. The size limit is 32KB. *Note*: If you are using the REST API directly to run your workflow, you must escape any JSON string value of `argument`. Example: `'{"argument":"{\"firstName\":\"FIRST\",\"lastName\":\"LAST\"}"}'`
"callLogLevel": "A String", # The call logging level associated to this execution.
"createTime": "A String", # Output only. Marks the creation of the execution.
"disableConcurrencyQuotaOverflowBuffering": True or False, # Optional. If set to true, the execution will not be backlogged when the concurrency quota is exhausted. The backlog execution starts when the concurrency quota becomes available.
"duration": "A String", # Output only. Measures the duration of the execution.
"endTime": "A String", # Output only. Marks the end of execution, successful or not.
"error": { # Error describes why the execution was abnormally terminated. # Output only. The error which caused the execution to finish prematurely. The value is only present if the execution's state is `FAILED` or `CANCELLED`.
"context": "A String", # Human-readable stack trace string.
"payload": "A String", # Error message and data returned represented as a JSON string.
"stackTrace": { # A collection of stack elements (frames) where an error occurred. # Stack trace with detailed information of where error was generated.
"elements": [ # An array of stack elements.
{ # A single stack element (frame) where an error occurred.
"position": { # Position contains source position information about the stack trace element such as line number, column number and length of the code block in bytes. # The source position information of the stack trace element.
"column": "A String", # The source code column position (of the line) the current instruction was generated from.
"length": "A String", # The number of bytes of source code making up this stack trace element.
"line": "A String", # The source code line number the current instruction was generated from.
},
"routine": "A String", # The routine where the error occurred.
"step": "A String", # The step the error occurred at.
},
],
},
},
"executionHistoryLevel": "A String", # Optional. Describes the level of the execution history feature to apply to this execution. If not specified, the level of the execution history feature will be determined by its workflow's execution history level. If the value is different from its workflow's value, it will override the workflow's execution history level for this exeuction.
"labels": { # Labels associated with this execution. Labels can contain at most 64 entries. Keys and values can be no longer than 63 characters and can only contain lowercase letters, numeric characters, underscores, and dashes. Label keys must start with a letter. International characters are allowed. By default, labels are inherited from the workflow but are overridden by any labels associated with the execution.
"a_key": "A String",
},
"name": "A String", # Output only. The resource name of the execution. Format: projects/{project}/locations/{location}/workflows/{workflow}/executions/{execution}
"result": "A String", # Output only. Output of the execution represented as a JSON string. The value can only be present if the execution's state is `SUCCEEDED`.
"startTime": "A String", # Output only. Marks the beginning of execution. Note that this will be the same as `createTime` for executions that start immediately.
"state": "A String", # Output only. Current state of the execution.
"stateError": { # Describes an error related to the current state of the Execution resource. # Output only. Error regarding the state of the Execution resource. For example, this field will have error details if the execution data is unavailable due to revoked KMS key permissions.
"details": "A String", # Provides specifics about the error.
"type": "A String", # The type of this state error.
},
"status": { # Represents the current status of this execution. # Output only. Status tracks the current steps and progress data of this execution.
"currentSteps": [ # A list of currently executing or last executed step names for the workflow execution currently running. If the workflow has succeeded or failed, this is the last attempted or executed step. Presently, if the current step is inside a subworkflow, the list only includes that step. In the future, the list will contain items for each step in the call stack, starting with the outermost step in the `main` subworkflow, and ending with the most deeply nested step.
{ # Represents a step of the workflow this execution is running.
"routine": "A String", # Name of a routine within the workflow.
"step": "A String", # Name of a step within the routine.
},
],
},
"workflowRevisionId": "A String", # Output only. Revision of the workflow this execution is using.
}
x__xgafv: string, V1 error format.
Allowed values
1 - v1 error format
2 - v2 error format
Returns:
An object of the form:
{ # A running instance of a [Workflow](/workflows/docs/reference/rest/v1/projects.locations.workflows).
"argument": "A String", # Input parameters of the execution represented as a JSON string. The size limit is 32KB. *Note*: If you are using the REST API directly to run your workflow, you must escape any JSON string value of `argument`. Example: `'{"argument":"{\"firstName\":\"FIRST\",\"lastName\":\"LAST\"}"}'`
"callLogLevel": "A String", # The call logging level associated to this execution.
"createTime": "A String", # Output only. Marks the creation of the execution.
"disableConcurrencyQuotaOverflowBuffering": True or False, # Optional. If set to true, the execution will not be backlogged when the concurrency quota is exhausted. The backlog execution starts when the concurrency quota becomes available.
"duration": "A String", # Output only. Measures the duration of the execution.
"endTime": "A String", # Output only. Marks the end of execution, successful or not.
"error": { # Error describes why the execution was abnormally terminated. # Output only. The error which caused the execution to finish prematurely. The value is only present if the execution's state is `FAILED` or `CANCELLED`.
"context": "A String", # Human-readable stack trace string.
"payload": "A String", # Error message and data returned represented as a JSON string.
"stackTrace": { # A collection of stack elements (frames) where an error occurred. # Stack trace with detailed information of where error was generated.
"elements": [ # An array of stack elements.
{ # A single stack element (frame) where an error occurred.
"position": { # Position contains source position information about the stack trace element such as line number, column number and length of the code block in bytes. # The source position information of the stack trace element.
"column": "A String", # The source code column position (of the line) the current instruction was generated from.
"length": "A String", # The number of bytes of source code making up this stack trace element.
"line": "A String", # The source code line number the current instruction was generated from.
},
"routine": "A String", # The routine where the error occurred.
"step": "A String", # The step the error occurred at.
},
],
},
},
"executionHistoryLevel": "A String", # Optional. Describes the level of the execution history feature to apply to this execution. If not specified, the level of the execution history feature will be determined by its workflow's execution history level. If the value is different from its workflow's value, it will override the workflow's execution history level for this exeuction.
"labels": { # Labels associated with this execution. Labels can contain at most 64 entries. Keys and values can be no longer than 63 characters and can only contain lowercase letters, numeric characters, underscores, and dashes. Label keys must start with a letter. International characters are allowed. By default, labels are inherited from the workflow but are overridden by any labels associated with the execution.
"a_key": "A String",
},
"name": "A String", # Output only. The resource name of the execution. Format: projects/{project}/locations/{location}/workflows/{workflow}/executions/{execution}
"result": "A String", # Output only. Output of the execution represented as a JSON string. The value can only be present if the execution's state is `SUCCEEDED`.
"startTime": "A String", # Output only. Marks the beginning of execution. Note that this will be the same as `createTime` for executions that start immediately.
"state": "A String", # Output only. Current state of the execution.
"stateError": { # Describes an error related to the current state of the Execution resource. # Output only. Error regarding the state of the Execution resource. For example, this field will have error details if the execution data is unavailable due to revoked KMS key permissions.
"details": "A String", # Provides specifics about the error.
"type": "A String", # The type of this state error.
},
"status": { # Represents the current status of this execution. # Output only. Status tracks the current steps and progress data of this execution.
"currentSteps": [ # A list of currently executing or last executed step names for the workflow execution currently running. If the workflow has succeeded or failed, this is the last attempted or executed step. Presently, if the current step is inside a subworkflow, the list only includes that step. In the future, the list will contain items for each step in the call stack, starting with the outermost step in the `main` subworkflow, and ending with the most deeply nested step.
{ # Represents a step of the workflow this execution is running.
"routine": "A String", # Name of a routine within the workflow.
"step": "A String", # Name of a step within the routine.
},
],
},
"workflowRevisionId": "A String", # Output only. Revision of the workflow this execution is using.
}
deleteExecutionHistory(name, body=None, x__xgafv=None)
Deletes all step entries for an execution.
Args:
name: string, Required. Name of the execution for which step entries should be deleted. Format: projects/{project}/locations/{location}/workflows/{workflow}/executions/{execution} (required)
body: object, The request body.
The object takes the form of:
{ # Request for the DeleteExecutionHistory method.
}
x__xgafv: string, V1 error format.
Allowed values
1 - v1 error format
2 - v2 error format
Returns:
An object of the form:
{ # A generic empty message that you can re-use to avoid defining duplicated empty messages in your APIs. A typical example is to use it as the request or the response type of an API method. For instance: service Foo { rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty); }
}
exportData(name, x__xgafv=None)
Returns all metadata stored about an execution, excluding most data that is already accessible using other API methods.
Args:
name: string, Required. Name of the execution for which data is to be exported. Format: projects/{project}/locations/{location}/workflows/{workflow}/executions/{execution} (required)
x__xgafv: string, V1 error format.
Allowed values
1 - v1 error format
2 - v2 error format
Returns:
An object of the form:
{ # Response for the ExportData method.
"data": "A String", # The JSON string with customer data and metadata for an execution with the given name
}
get(name, view=None, x__xgafv=None)
Returns an execution of the given name.
Args:
name: string, Required. Name of the execution to be retrieved. Format: projects/{project}/locations/{location}/workflows/{workflow}/executions/{execution} (required)
view: string, Optional. A view defining which fields should be filled in the returned execution. The API will default to the FULL view.
Allowed values
EXECUTION_VIEW_UNSPECIFIED - The default / unset value.
BASIC - Includes only basic metadata about the execution. The following fields are returned: name, start_time, end_time, duration, state, and workflow_revision_id.
FULL - Includes all data.
x__xgafv: string, V1 error format.
Allowed values
1 - v1 error format
2 - v2 error format
Returns:
An object of the form:
{ # A running instance of a [Workflow](/workflows/docs/reference/rest/v1/projects.locations.workflows).
"argument": "A String", # Input parameters of the execution represented as a JSON string. The size limit is 32KB. *Note*: If you are using the REST API directly to run your workflow, you must escape any JSON string value of `argument`. Example: `'{"argument":"{\"firstName\":\"FIRST\",\"lastName\":\"LAST\"}"}'`
"callLogLevel": "A String", # The call logging level associated to this execution.
"createTime": "A String", # Output only. Marks the creation of the execution.
"disableConcurrencyQuotaOverflowBuffering": True or False, # Optional. If set to true, the execution will not be backlogged when the concurrency quota is exhausted. The backlog execution starts when the concurrency quota becomes available.
"duration": "A String", # Output only. Measures the duration of the execution.
"endTime": "A String", # Output only. Marks the end of execution, successful or not.
"error": { # Error describes why the execution was abnormally terminated. # Output only. The error which caused the execution to finish prematurely. The value is only present if the execution's state is `FAILED` or `CANCELLED`.
"context": "A String", # Human-readable stack trace string.
"payload": "A String", # Error message and data returned represented as a JSON string.
"stackTrace": { # A collection of stack elements (frames) where an error occurred. # Stack trace with detailed information of where error was generated.
"elements": [ # An array of stack elements.
{ # A single stack element (frame) where an error occurred.
"position": { # Position contains source position information about the stack trace element such as line number, column number and length of the code block in bytes. # The source position information of the stack trace element.
"column": "A String", # The source code column position (of the line) the current instruction was generated from.
"length": "A String", # The number of bytes of source code making up this stack trace element.
"line": "A String", # The source code line number the current instruction was generated from.
},
"routine": "A String", # The routine where the error occurred.
"step": "A String", # The step the error occurred at.
},
],
},
},
"executionHistoryLevel": "A String", # Optional. Describes the level of the execution history feature to apply to this execution. If not specified, the level of the execution history feature will be determined by its workflow's execution history level. If the value is different from its workflow's value, it will override the workflow's execution history level for this exeuction.
"labels": { # Labels associated with this execution. Labels can contain at most 64 entries. Keys and values can be no longer than 63 characters and can only contain lowercase letters, numeric characters, underscores, and dashes. Label keys must start with a letter. International characters are allowed. By default, labels are inherited from the workflow but are overridden by any labels associated with the execution.
"a_key": "A String",
},
"name": "A String", # Output only. The resource name of the execution. Format: projects/{project}/locations/{location}/workflows/{workflow}/executions/{execution}
"result": "A String", # Output only. Output of the execution represented as a JSON string. The value can only be present if the execution's state is `SUCCEEDED`.
"startTime": "A String", # Output only. Marks the beginning of execution. Note that this will be the same as `createTime` for executions that start immediately.
"state": "A String", # Output only. Current state of the execution.
"stateError": { # Describes an error related to the current state of the Execution resource. # Output only. Error regarding the state of the Execution resource. For example, this field will have error details if the execution data is unavailable due to revoked KMS key permissions.
"details": "A String", # Provides specifics about the error.
"type": "A String", # The type of this state error.
},
"status": { # Represents the current status of this execution. # Output only. Status tracks the current steps and progress data of this execution.
"currentSteps": [ # A list of currently executing or last executed step names for the workflow execution currently running. If the workflow has succeeded or failed, this is the last attempted or executed step. Presently, if the current step is inside a subworkflow, the list only includes that step. In the future, the list will contain items for each step in the call stack, starting with the outermost step in the `main` subworkflow, and ending with the most deeply nested step.
{ # Represents a step of the workflow this execution is running.
"routine": "A String", # Name of a routine within the workflow.
"step": "A String", # Name of a step within the routine.
},
],
},
"workflowRevisionId": "A String", # Output only. Revision of the workflow this execution is using.
}
list(parent, filter=None, orderBy=None, pageSize=None, pageToken=None, view=None, x__xgafv=None)
Returns a list of executions which belong to the workflow with the given name. The method returns executions of all workflow revisions. Returned executions are ordered by their start time (newest first).
Args:
parent: string, Required. Name of the workflow for which the executions should be listed. Format: projects/{project}/locations/{location}/workflows/{workflow} (required)
filter: string, Optional. Filters applied to the `[Executions.ListExecutions]` results. The following fields are supported for filtering: `executionId`, `state`, `createTime`, `startTime`, `endTime`, `duration`, `workflowRevisionId`, `stepName`, `label`, and `disableConcurrencyQuotaOverflowBuffering`. For details, see AIP-160. For more information, see Filter executions. For example, if you are using the Google APIs Explorer: `state="SUCCEEDED"` or `startTime>"2023-08-01" AND state="FAILED"`
orderBy: string, Optional. Comma-separated list of fields that specify the ordering applied to the `[Executions.ListExecutions]` results. By default the ordering is based on descending `createTime`. The following fields are supported for ordering: `executionId`, `state`, `createTime`, `startTime`, `endTime`, `duration`, and `workflowRevisionId`. For details, see AIP-132.
pageSize: integer, Maximum number of executions to return per call. Max supported value depends on the selected Execution view: it's 1000 for BASIC and 100 for FULL. The default value used if the field is not specified is 100, regardless of the selected view. Values greater than the max value will be coerced down to it.
pageToken: string, A page token, received from a previous `ListExecutions` call. Provide this to retrieve the subsequent page. When paginating, all other parameters provided to `ListExecutions` must match the call that provided the page token. Note that pagination is applied to dynamic data. The list of executions returned can change between page requests.
view: string, Optional. A view defining which fields should be filled in the returned executions. The API will default to the BASIC view.
Allowed values
EXECUTION_VIEW_UNSPECIFIED - The default / unset value.
BASIC - Includes only basic metadata about the execution. The following fields are returned: name, start_time, end_time, duration, state, and workflow_revision_id.
FULL - Includes all data.
x__xgafv: string, V1 error format.
Allowed values
1 - v1 error format
2 - v2 error format
Returns:
An object of the form:
{ # Response for the ListExecutions method.
"executions": [ # The executions which match the request.
{ # A running instance of a [Workflow](/workflows/docs/reference/rest/v1/projects.locations.workflows).
"argument": "A String", # Input parameters of the execution represented as a JSON string. The size limit is 32KB. *Note*: If you are using the REST API directly to run your workflow, you must escape any JSON string value of `argument`. Example: `'{"argument":"{\"firstName\":\"FIRST\",\"lastName\":\"LAST\"}"}'`
"callLogLevel": "A String", # The call logging level associated to this execution.
"createTime": "A String", # Output only. Marks the creation of the execution.
"disableConcurrencyQuotaOverflowBuffering": True or False, # Optional. If set to true, the execution will not be backlogged when the concurrency quota is exhausted. The backlog execution starts when the concurrency quota becomes available.
"duration": "A String", # Output only. Measures the duration of the execution.
"endTime": "A String", # Output only. Marks the end of execution, successful or not.
"error": { # Error describes why the execution was abnormally terminated. # Output only. The error which caused the execution to finish prematurely. The value is only present if the execution's state is `FAILED` or `CANCELLED`.
"context": "A String", # Human-readable stack trace string.
"payload": "A String", # Error message and data returned represented as a JSON string.
"stackTrace": { # A collection of stack elements (frames) where an error occurred. # Stack trace with detailed information of where error was generated.
"elements": [ # An array of stack elements.
{ # A single stack element (frame) where an error occurred.
"position": { # Position contains source position information about the stack trace element such as line number, column number and length of the code block in bytes. # The source position information of the stack trace element.
"column": "A String", # The source code column position (of the line) the current instruction was generated from.
"length": "A String", # The number of bytes of source code making up this stack trace element.
"line": "A String", # The source code line number the current instruction was generated from.
},
"routine": "A String", # The routine where the error occurred.
"step": "A String", # The step the error occurred at.
},
],
},
},
"executionHistoryLevel": "A String", # Optional. Describes the level of the execution history feature to apply to this execution. If not specified, the level of the execution history feature will be determined by its workflow's execution history level. If the value is different from its workflow's value, it will override the workflow's execution history level for this exeuction.
"labels": { # Labels associated with this execution. Labels can contain at most 64 entries. Keys and values can be no longer than 63 characters and can only contain lowercase letters, numeric characters, underscores, and dashes. Label keys must start with a letter. International characters are allowed. By default, labels are inherited from the workflow but are overridden by any labels associated with the execution.
"a_key": "A String",
},
"name": "A String", # Output only. The resource name of the execution. Format: projects/{project}/locations/{location}/workflows/{workflow}/executions/{execution}
"result": "A String", # Output only. Output of the execution represented as a JSON string. The value can only be present if the execution's state is `SUCCEEDED`.
"startTime": "A String", # Output only. Marks the beginning of execution. Note that this will be the same as `createTime` for executions that start immediately.
"state": "A String", # Output only. Current state of the execution.
"stateError": { # Describes an error related to the current state of the Execution resource. # Output only. Error regarding the state of the Execution resource. For example, this field will have error details if the execution data is unavailable due to revoked KMS key permissions.
"details": "A String", # Provides specifics about the error.
"type": "A String", # The type of this state error.
},
"status": { # Represents the current status of this execution. # Output only. Status tracks the current steps and progress data of this execution.
"currentSteps": [ # A list of currently executing or last executed step names for the workflow execution currently running. If the workflow has succeeded or failed, this is the last attempted or executed step. Presently, if the current step is inside a subworkflow, the list only includes that step. In the future, the list will contain items for each step in the call stack, starting with the outermost step in the `main` subworkflow, and ending with the most deeply nested step.
{ # Represents a step of the workflow this execution is running.
"routine": "A String", # Name of a routine within the workflow.
"step": "A String", # Name of a step within the routine.
},
],
},
"workflowRevisionId": "A String", # Output only. Revision of the workflow this execution is using.
},
],
"nextPageToken": "A String", # A token, which can be sent as `page_token` to retrieve the next page. If this field is omitted, there are no subsequent pages.
}
list_next()
Retrieves the next page of results.
Args:
previous_request: The request for the previous page. (required)
previous_response: The response from the request for the previous page. (required)
Returns:
A request object that you can call 'execute()' on to request the next
page. Returns None if there are no more items in the collection.