switch celErr.Type {
		case cel.ErrorTypeRequired:
			return field.Required(fldPath, celErr.Detail)
		case cel.ErrorTypeInvalid:
			return field.Invalid(fldPath, expression.GetExpression(), celErr.Detail)
		case cel.ErrorTypeInternal:
			return field.InternalError(fldPath, celErr)
		}
	}
	return field.InternalError(fldPath, fmt.Errorf("unsupported error type: %w", err))
}

                // we have C[*:map] -> should become (C) map
                SpreadMapExpression mapExpression = (SpreadMapExpression) be.getRightExpression();
                Expression right = transform(mapExpression.getExpression());
                Expression ce = new CastExpression(left.getType(), right);
                ce.setSourcePosition(be);
                return ce;
            }