def METHOD_NAME(self, name=None):
    """
    Return the residue field of the place.
    EXAMPLES::
        sage: F.<x> = FunctionField(GF(2))
        sage: O = F.maximal_order()
        sage: p = O.ideal(x^2 + x + 1).place()
        sage: k, fr_k, to_k = p.residue_field()                                     # needs sage.rings.function_field
        sage: k                                                                     # needs sage.rings.function_field
        Finite Field in z2 of size 2^2
        sage: fr_k                                                                  # needs sage.rings.function_field
        Ring morphism:
          From: Finite Field in z2 of size 2^2
          To:   Valuation ring at Place (x^2 + x + 1)
        sage: to_k                                                                  # needs sage.rings.function_field
        Ring morphism:
          From: Valuation ring at Place (x^2 + x + 1)
          To:   Finite Field in z2 of size 2^2
    """
    return self.valuation_ring().METHOD_NAME(name=name)