code: def get_fixture(self, fixture_id, head2head=None):
          
          filters = []
          if head2head is not None and int(head2head) > 0:
              self.logger.debug(f'Getting fixture {fixture_id}. head2head is {head2head}.')
              filters.append(self.__createFilter('head2head', head2head))
          else:
              self.logger.debug(f'Getting fixture {fixture_id}.')
  
          return self._request('fixtures', fixture_id, filters=filters)
docs: Loads a single fixture.
  
          Args:
              * fixture_id (str): the id of the fixture
              * head2head (int, optional): load the previous n fixture of the two teams
  
          Returns:
              * :obj: json: the fixture-json