jodd-vtor/src/main/java/jodd/vtor/constraint/AssertValidConstraint.java
@Override
	public boolean isValid(final ValidationConstraintContext vcc, final Object value) {
		if (value == null) {
			return true;
		}
		vcc.validateWithin(targetValidationContext, value);
		return true;
	}
@Override
	public boolean isValid(final ValidationConstraintContext vcc, final Object value) {
		if (value == null) {
			return true;
		}
		vcc.validateWithin(targetValidationContext, value);
		return true;
	}
Invokes validation on inner context. Always returns <code>true</code> since
inner context violations will be appended to provided validator.