code: def select_elements(self, json_string, expr):
          
          load_input_json = self.string_to_json(json_string)
          # parsing jsonselect
          match = jsonselect.match(sel=expr, obj=load_input_json)
          ret = list(match)
          return ret if ret else None
docs: Return list of elements from _json_string_, matching [ http://jsonselect.org/ | JSONSelect] expression.
  
          *DEPRECATED* JSON Select query language is outdated and not supported any more.
          Use other keywords of this library to query JSON.
  
          *Args:*\n
          _json_string_ - JSON string;\n
          _expr_ - JSONSelect expression;
  
          *Returns:*\n
          List of found elements or ``None`` if no elements were found
  
          *Example:*\n
          | *Settings* | *Value* |
          | Library    | JsonValidator |
          | Library    | OperatingSystem |
          | *Test Cases* | *Action* | *Argument* | *Argument* |
          | Select json elements | ${json_example}=   | OperatingSystem.Get File |   ${CURDIR}${/}json_example.json |
          |                      |  ${json_elements}= | Select elements  |  ${json_example}  |  .author:contains("Evelyn Waugh")~.price |
          =>\n
          | 12.99