private static String @Nullable [] createArguments(@NotNull PsiExpression rgbExpression,
                                                     @NotNull PsiExpression hasAlphaExpression) {
    final Boolean hasAlpha = computeBoolean(hasAlphaExpression);
    if (hasAlpha == null) {
      return null;
    }
    return createArguments(rgbExpression, hasAlpha);
  }
private static String @Nullable [] createArguments(@NotNull PsiExpression rgbExpression,
                                                     @NotNull PsiExpression hasAlphaExpression)