text: # -*- coding: utf-8 -*-
  
  """Utility functions for grouping sub-graphs."""
  
  from ..utils import update_metadata, update_node_helper
  
  __all__ = [
      'cleanup',
  ]
  
  
  def cleanup(graph, subgraphs):
      """Clean up the metadata in the subgraphs.
  
      :type graph: pybel.BELGraph
      :type subgraphs: dict[Any,pybel.BELGraph]
      """
      for subgraph in subgraphs.values():
          update_node_helper(graph, subgraph)
          update_metadata(graph, subgraph)
  