AI-generated Key Takeaways
- 
          Describes a single operation on a campaign asset, including create, update, or remove. 
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          The update_maskfield is a FieldMask used to specify which resource fields are modified during an update operation.
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          The operationfield is a union field that indicates the type of mutate operation being performed (create, update, or remove).
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          Create operations do not require a resource name for the new campaign asset. 
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          Update and remove operations require a resource name for the campaign asset. 
A single operation (create, update, remove) on a campaign asset.
| Fields | |
|---|---|
| 
 | FieldMask that determines which resource fields are modified in an update. | 
| Union field 
 | |
| 
 | Create operation: No resource name is expected for the new campaign asset. | 
| 
 | Update operation: The campaign asset is expected to have a valid resource name. | 
| 
 | 
 Remove operation: A resource name for the removed campaign asset is expected, in this format: 
 |