AI-generated Key Takeaways
- 
          Describes a single operation for managing customizer attributes, including creation and removal. 
- 
          The update_maskfield is used to specify which resource fields are modified during an update.
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          The operationfield is a union field that can be either acreateor aremoveoperation.
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          Create operations for a new customizer attribute do not require a resource name. 
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          Remove operations require a resource name in a specific format to identify the customizer attribute to be removed. 
A single operation (create, remove) on a customizer attribute.
| Fields | |
|---|---|
| 
 | FieldMask that determines which resource fields are modified in an update. | 
| Union field 
 | |
| 
 | Create operation: No resource name is expected for the new customizer attribute | 
| 
 | 
 Remove operation: A resource name for the removed customizer attribute is expected, in this format:  |