code: def exact_match(self, descriptor):
          
          return self._exact_match_field(self._group, descriptor.get_group()) \
              and self._exact_atch_field(self._type, descriptor.get_type()) \
              and self._exact_match_field(self._kind, descriptor.get_kind()) \
              and self._exact_match_field(self._name, descriptor.get_name()) \
              and self._exact_match_field(self._version, descriptor.get_version())
docs: Matches this descriptor to another descriptor exactly.
           
          Args:
              descriptor: another descriptor to match this one.
  
          Returns: True if descriptors match or False otherwise.