private static void handleCallExpression(@NotNull ProblemsHolder holder, @NotNull UCallExpression expression) {
    if (!isNamedColorCall(expression)) return;

    String key = getKey(expression);
    if (key == null) return;

    if (!isRegisteredNamedColor(key)) {
      registerProblem(key, holder, expression);
    }
  }
private static void handleCallExpression(@NotNull ProblemsHolder holder, @NotNull UCallExpression expression)