STATUS
A field in an API-specific (custom) Operation object which carries the same
meaning as google.longrunning.Operation.done. If the annotated field is of
an enum type, annotated_field_name == EnumType.DONE semantics should be
equivalent to Operation.done == true. If the annotated field is of type
boolean, then it should follow the same semantics as Operation.done.
Otherwise, a non-empty value should be treated as Operation.done == true.
trait Singleton
trait Product
trait Mirror
trait Recognized
class OperationResponseMapping
trait GeneratedEnum
trait Serializable
trait Product
trait Equals
class Object
trait Matchable
class Any