code: def create_relationship(manager, handle_id, other_handle_id, rel_type):
      
      meta_type = get_node_meta_type(manager, handle_id)
      if meta_type == 'Location':
          return create_location_relationship(manager, handle_id, other_handle_id, rel_type)
      elif meta_type == 'Logical':
          return create_logical_relationship(manager, handle_id, other_handle_id, rel_type)
      elif meta_type == 'Relation':
          return create_relation_relationship(manager, handle_id, other_handle_id, rel_type)
      elif meta_type == 'Physical':
          return create_physical_relationship(manager, handle_id, other_handle_id, rel_type)
      other_meta_type = get_node_meta_type(manager, other_handle_id)
      raise exceptions.NoRelationshipPossible(handle_id, meta_type, other_handle_id, other_meta_type, rel_type)
docs: Makes a relationship from node to other_node depending on which
      meta_type the nodes are. Returns the relationship or raises
      NoRelationshipPossible exception.