A single operation (create, update) on a conversion custom variable.

JSON representation
  "updateMask": string,

  // Union field operation can be only one of the following:
  "create": {
    object (ConversionCustomVariable)
  "update": {
    object (ConversionCustomVariable)
  // End of list of possible types for union field operation.

string (FieldMask format)

FieldMask that determines which resource fields are modified in an update.

This is a comma-separated list of fully qualified names of fields. Example: "user.displayName,photo".

Union field operation. The mutate operation. operation can be only one of the following:

object (ConversionCustomVariable)

Create operation: No resource name is expected for the new conversion custom variable.


object (ConversionCustomVariable)

Update operation: The conversion custom variable is expected to have a valid resource name.