docs: def __camel_case(word):
          """
          Convert underscore naming into camel case naming
          :param str word:
          :return str:
          """
          word = word.lower()
          if '_' in word:
              split_word = word.split('_')
          else:
              split_word = word.split()
          if len(split_word) > 0:
              for i, word in enumerate(split_word):
                  if i > 0:
                      split_word[i] = word.title()
          strings = ''.join(split_word)
          return strings