@Nullable
  PsiElement resolveMember(@NotNull PyClassType type,
                           @NotNull String name,
                           @Nullable PsiElement location,
                           @NotNull PyResolveContext resolveContext);
@Nullable
  PsiElement resolveMember(@NotNull PyClassType type,
                           @NotNull String name,
                           @Nullable PsiElement location,
                           @NotNull PyResolveContext resolveContext)