docs: def _find_value(ret_dict, key, path=None):
      '''
      PRIVATE METHOD
      Traverses a dictionary of dictionaries/lists to find key
      and return the value stored.
      TODO:// this method doesn't really work very well, and it's not really
              very useful in its current state. The purpose for this method is
              to simplify parsing the JSON output so you can just pass the key
              you want to find and have it return the value.
      ret : dict<str,obj>
          The dictionary to search through. Typically this will be a dict
          returned from solr.
      key : str
          The key (str) to find in the dictionary
  
      Return: list<dict<str,obj>>::
  
          [{path:path, value:value}]
      '''
      if path is None:
          path = key
      else:
          path = "{0}:{1}".format(path, key)
  
      ret = []
      for ikey, val in six.iteritems(ret_dict):
          if ikey == key:
              ret.append({path: val})
          if isinstance(val, list):
              for item in val:
                  if isinstance(item, dict):
                      ret = ret + _find_value(item, key, path)
          if isinstance(val, dict):
              ret = ret + _find_value(val, key, path)
      return ret