google.protobuf.field_mask_pb2.FieldMask
Field mask is used to specify the fields to be overwritten
in the Cluster resource by the update. The fields specified
in the update_mask are relative to the resource, not the
full request. A field will be overwritten if it is in the
mask. If the user does not provide a mask then all fields
will be overwritten.
str
A unique identifier for this request. Restricted to 36 ASCII
characters. A random UUID is recommended. This request is
only idempotent if ``request_id`` is provided.