code: def meta_get(self, key, metafield, default=None):
          ''' Return the value of a meta field for a key. '''
          return self._meta.get(key, {}).get(metafield, defaultf meta_get(self, key, metafield, default=None):
          ''' Return the value of a meta field for a key. '''
          return self._meta.get(key, {}).get(metafield, default)
docs: Return the value of a meta field for a key.