A single operation (create, remove, update) on an ad group bid modifier.
| Fields | |
|---|---|
| 
 | FieldMask that determines which resource fields are modified in an update. | 
| Union field 
 | |
| 
 | Create operation: No resource name is expected for the new ad group bid modifier. | 
| 
 | Update operation: The ad group bid modifier is expected to have a valid resource name. | 
| 
 | 
 Remove operation: A resource name for the removed ad group bid modifier is expected, in this format: 
 |