code: def describe_enum_value(enum_value):
      
      enum_value_descriptor = EnumValueDescriptor()
      enum_value_descriptor.name = six.text_type(enum_value.name)
      enum_value_descriptor.number = enum_value.number
      return enum_value_descriptor
docs: Build descriptor for Enum instance.
  
      Args:
        enum_value: Enum value to provide descriptor for.
  
      Returns:
        Initialized EnumValueDescriptor instance describing the Enum instance.