AI-generated Key Takeaways
- 
          Describes a single operation (create, update, or remove) on an ad group. 
- 
          The update_maskfield specifies which resource fields are modified during an update.
- 
          The operationfield is a union that can be eithercreate,update, orremove.
- 
          Create operations do not require a resource name, while update and remove operations do. 
A single operation (create, update, remove) on an ad group.
| 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. | 
| 
 | Update operation: The ad group is expected to have a valid resource name. | 
| 
 | 
 Remove operation: A resource name for the removed ad group is expected, in this format: 
 |