### Question:
ParameterMapValidator implements ConstraintValidator<ParameterMap, Map<String, ClientExpressionContainer>>,
        ValidationErrorDescriptorBuilder { @Override public void initialize(ParameterMap constraintAnnotation) { }  @Override void initialize(ParameterMap constraintAnnotation); @Override boolean isValid(Map<String, ClientExpressionContainer> targetParameterMap, ConstraintValidatorContext context); @Override ErrorDescriptor build(ConstraintViolation violation); static Pattern NOT_W_PATTERN; static Pattern NOT_A_TO_Z_OR_UNDERSCORE_PATTERN; }### Answer:
@Test public void initialize() { ParameterMap container = mock(ParameterMap.class); objectUnderTests.initialize(container); verifyZeroInteractions(container); }