CustomSizeValidator.class.getName());

        // Test that it implements ConstraintValidator
        assertTrue("Should implement ConstraintValidator",
                jakarta.validation.ConstraintValidator.class.isAssignableFrom(CustomSizeValidator.class));
    }

    @Test
    public void test_methodsExist() {
        // Verify required methods exist

import org.codelibs.core.lang.StringUtil;
import org.lastaflute.job.util.LaCronUtil;

import jakarta.validation.ConstraintValidator;
import jakarta.validation.ConstraintValidatorContext;

/**
 * Validator implementation for the CronExpression constraint.
 */
public class CronExpressionValidator implements ConstraintValidator<CronExpression, String> {

    /**
     * Default constructor.
     */
    public CronExpressionValidator() {

import org.hibernate.validator.constraintvalidation.HibernateConstraintValidatorContext;

import jakarta.validation.ConstraintValidator;
import jakarta.validation.ConstraintValidatorContext;

/**
 * Validator implementation for the CustomSize constraint.
 */
public class CustomSizeValidator implements ConstraintValidator<CustomSize, CharSequence> {

    /**
     * Default constructor.
     */
    public CustomSizeValidator() {