new_contents: #!/usr/bin/env python
  """
  A utility to create a Girder hierarchy from metadata.json.
  
  Useful in testing the monkeybrains plugin to set up a hierarchy,
  then set_metadata.py can be run to add the metadata.
  """
  
  import argparse
  import json
  
  import requests.packages.urllib3
  
  from girder_client import GirderClient
  
  requests.packages.urllib3.disable_warnings()
  
  
  parser = argparse.ArgumentParser(
      prog='create_tree_from_metadata',
      description='Create a hierarchy in girder from the metadata.json.')
  parser.add_argument('--username', required=False, default=None)
  parser.add_argument('--password', required=False, default=None)
  parser.add_argument('--parent-folder-id', required=True, default=None)
  parser.add_argument('--scheme', required=False, default=None)
  parser.add_argument('--host', required=False, default=None)
  parser.add_argument('--port', required=False, default=None)
  
  
  def main():
      """Create the folder hierarchy with metadata in a Girder instance."""
      args = parser.parse_args()
      g = GirderClient(host=args.host, port=args.port, scheme=args.scheme)
      g.authenticate(args.username, args.password)
  
      def create_folder_on_demand(parent_folder_id, folder_name):
          existing_folders = list(
              g.listFolder(parent_folder_id, name=folder_name))
          if not len(existing_folders):
              sought_folder = g.createFolder(parent_folder_id, name=folder_name)
          else:
              sought_folder = existing_folders[0]
          return sought_folder
  
      metadata_file = 'metadata.json'
      with open(metadata_file) as json_file:
          metadata = json.load(json_file)
      parent_folder_id = args.parent_folder_id
  
      for subject_id, subject_metadata in metadata.items():
          subject_folder = create_folder_on_demand(parent_folder_id, subject_id)
          for (scan_time, scan_date, scan_weight) in subject_metadata['scans']:
              create_folder_on_demand(subject_folder['_id'], scan_time)
  
  if __name__ == '__main__':
      main()
  
subject: Add utility to create test tree