def write_markdown_to_file(self, f):
    """Prints this library to file `f`.

    Args:
      f: File to write to.

    Returns:
      Dictionary of documented members.
    """
    print("---", file=f)
    print("---", file=f)
    print("<!-- This file is machine generated: DO NOT EDIT! -->", file=f)
    print("", file=f)
    # TODO(touts): Do not insert these.  Let the doc writer put them in
    # the module docstring explicitly.
    print("#", self._title, file=f)
    if self._prefix:
      print(self._prefix, file=f)
    print("[TOC]", file=f)
    print("", file=f)
    if self._module is not None:
      self._write_module_markdown_to_file(f, self._module)
Prints this library to file `f`.

    Args:
      f: File to write to.

    Returns:
      Dictionary of documented members.