def METHOD_NAME(self):
    """
    Return the valuation ring at the place.
    EXAMPLES::
        sage: K.<x> = FunctionField(GF(2)); _.<Y> = K[]
        sage: L.<y> = K.extension(Y^2 + Y + x + 1/x)                                # needs sage.rings.function_field
        sage: p = L.places_finite()[0]                                              # needs sage.rings.function_field
        sage: p.valuation_ring()                                                    # needs sage.rings.function_field
        Valuation ring at Place (x, x*y)
    """
    from .METHOD_NAME import FunctionFieldValuationRing
    return FunctionFieldValuationRing(self.function_field(), self)