def METHOD_NAME(self, new):
    r"""
    Return a new function derivative operator with the same
    parameter set but for a new function.
    EXAMPLES::
        sage: from sage.symbolic.operators import FDerivativeOperator
        sage: f = function('foo')
        sage: b = function('bar')
        sage: op = FDerivativeOperator(f, [0, 1])
        sage: op.change_function(bar)
        D[0, 1](bar)
    """
    return FDerivativeOperator(new, self._parameter_set)