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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _find_docstring_line_for_no_body(self, start):
 """Find the docstring associated with a definition with no body in the node. In these cases, the provided start and end line number for that element are the same, so we must get the docstring based on the sequential position of known docstrings. Args: start: the row where the class / function starts. Returns: int: the row number where the docstring is found. """

        tracked = sorted(list(self._tokenized_triple_quotes.keys()))

        for i in tracked:
            if min(start, i) == start:
                return i
        return None