def tokenize_paragraphs(cls, text):
        """Convert an input string into a list of paragraphs."""
        paragraphs = []
        paragraphs_first_pass = text.split('\n')
        for p in paragraphs_first_pass:
            paragraphs_second_pass = re.split('\s{4,}', p)
            paragraphs += paragraphs_second_pass

        # Remove empty strings from list
        paragraphs = [p for p in paragraphs if p]
        return paragraphs
Convert an input string into a list of paragraphs.