docs: def get_port_binding_level(filters):
      """Returns entries from PortBindingLevel based on the specified filters."""
      session = db.get_reader_session()
      with session.begin():
          return (session.query(ml2_models.PortBindingLevel).
                  filter_by(**filters).
                  order_by(ml2_models.PortBindingLevel.level).
                  all())