AI-generated Key Takeaways
- 
          Describes a single operation on a CustomerClientLink, supporting either create or update actions. 
- 
          The update_maskfield uses a FieldMask to specify which resource fields are modified during an update.
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          The operationfield is a union that determines the type of mutate operation, accepting eithercreateorupdate.
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          A createoperation does not require a resource name, while anupdateoperation expects a valid resource name for the link.
A single operation (create, update) on a CustomerClientLink.
| Fields | |
|---|---|
| 
 | FieldMask that determines which resource fields are modified in an update. | 
| Union field 
 | |
| 
 | Create operation: No resource name is expected for the new link. | 
| 
 | Update operation: The link is expected to have a valid resource name. |