code: def diff_parameters(old_params, new_params):
      
      [changes, diff] = diff_dictionaries(old_params, new_params)
      if changes == 0:
          return []
      return diff
docs: Compares the old vs. new parameters and returns a "diff"
  
      If there are no changes, we return an empty list.
  
      Args:
          old_params(dict): old paramters
          new_params(dict): new parameters
  
      Returns:
          list: A list of differences