docs: def elasticsearch(delete, index_name):
      """Setup Elasticsearch namespace indexes
  
      This will by default only create the indexes and run the namespace index mapping
      if the indexes don't exist.  The --delete option will force removal of the
      index if it exists.
  
      The index_name should be aliased to the index 'terms' when it's ready"""
  
      if delete:
          bel.db.elasticsearch.get_client(delete=True)
      else:
          bel.db.elasticsearch.get_client()