Simple validation framework using function references to execute validation process. Executed using validate function which throws a ValidationError or passing with no result. The process executes all validation, even when first fails, allowing to extract all results from provided ValidationError, through ValidationError.errors.

Example:

void someValidation(String param) {
    throw Exception("INVALID ``param``");
}

validate {
    validations = {
        Single(`someValidation`, ["Abc"])
    };
};

[[validate]] has thrown and whenever caught result can be extracted.