utils/style_doc.py/DocstringStyler/is_no_style_block
class DocstringStyler:    def is_no_style_block(self, line):
        if _re_textual_blocks.search(line) is not None:
            return False
        if _re_example.search(line) is not None:
            return True
        return _re_code_block.search(line) is not None