code: def add_search_path(*path_tokens):
      
      full_path = os.path.join(*path_tokens)
      if full_path not in sys.path:
          sys.path.insert(0, os.path.abspath(full_path))
docs: Adds a new search path from where modules can be loaded. 
      
      This function is provided for test applications to add locations to the search path, so any required functionality
      can be loaded. It helps keeping the step implementation modules simple by placing the bulk of the implementation in
      separate utility libraries. This function can also be used to add the application being tested to the path, so its
      functionality can be made available for testing.
  
      :param arglist path_tokens: 
          Variable list of path tokens that is joined to create the full, absolute path to be added.