code: def _set_table(self, data):
          
          self.set_state('table')
          self.current_table = HEPTable(index=len(self.tables) + 1)
          self.tables.append(self.current_table)
          self.data.append(self.current_table.metadata)
docs: Set current parsing state to 'table',
          create new table object and add it to tables collection