def METHOD_NAME(self):
    """
    The horizontal reflection of a diagram,
    defined as the dagger of the rotation.
    Equivalently, it is the rotation of the dagger.
    Example
    -------
    >>> x, y, z = map(Ty, "xyz")
    >>> x, y, z = map(Ty, "xyz")
    >>> f = Box('f', x @ y, z).curry()
    >>> assert f.conjugate() == f[::-1].rotate() == f.rotate()[::-1]
    >>> from discopy.drawing import Equation
    >>> Equation(f, f.conjugate(), symbol="$\\\\mapsto$").draw(
    ...     figsize=(6, 3), path="docs/_static/pivotal/conjugate.png")
    .. image:: /_static/pivotal/conjugate.png
        :align: center
    """
    return self.rotate().dagger()