code: def to_database(self, manager=None):
          
          network = pybel.to_database(self.model, manager=manager)
          return network
docs: Send the model to the PyBEL database
  
          This function wraps :py:func:`pybel.to_database`.
  
          Parameters
          ----------
          manager : Optional[pybel.manager.Manager]
              A PyBEL database manager. If none, first checks the PyBEL
              configuration for ``PYBEL_CONNECTION`` then checks the
              environment variable ``PYBEL_REMOTE_HOST``. Finally,
              defaults to using SQLite database in PyBEL data directory
              (automatically configured by PyBEL)
  
          Returns
          -------
          network : Optional[pybel.manager.models.Network]
              The SQLAlchemy model representing the network that was uploaded.
              Returns None if upload fails.