AI-generated Key Takeaways
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This content describes operations for creating, updating, or removing a user list.
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An
update_maskcan be used to specify which fields are modified during an update operation. - 
          
The
operationfield is a union field that determines whether the operation is a create, update, or remove. - 
          
Create operations do not expect a resource name, update operations expect a valid resource name, and remove operations expect a resource name in a specific format.
 
A single operation (create, update) on a user list.
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                   FieldMask that determines which resource fields are modified in an update.  | 
              
Union field 
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                   Create operation: No resource name is expected for the new user list.  | 
              
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                   Update operation: The user list is expected to have a valid resource name.  | 
              
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 Remove operation: A resource name for the removed user list is expected, in this format: 
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