WriteControl

Provides control over how write requests are executed. When not specified, the last write wins.

JSON representation 
{

  // Union field control can be only one of the following:
  "requiredRevisionId": string
  // End of list of possible types for union field control.
}
Fields
Union field control. Determines the revision of the label to write to and how the request should behave if that revision is not the current revision of the label. control can be only one of the following:
requiredRevisionId

string

The [revisionId][google.apps.drive.labels.v1.Label.revision_id] of the label that the write request will be applied to. If this is not the latest revision of the label, the request will not be processed and will return a 400 Bad Request error.