### Question:
ExpressionRepresentationRequiredValidator implements ConstraintValidator<ExpressionRepresentationRequired, ClientExpressionContainer>, ValidationErrorDescriptorBuilder { @Override public void initialize(ExpressionRepresentationRequired constraintAnnotation) { }  @Override ErrorDescriptor build(ConstraintViolation violation); @Override void initialize(ExpressionRepresentationRequired constraintAnnotation); @Override boolean isValid(ClientExpressionContainer value, ConstraintValidatorContext context);  }### Answer:
@Test public void initialize() { ExpressionRepresentationRequired container = mock(ExpressionRepresentationRequired.class); objectUnderTests.initialize(container); verifyZeroInteractions(container); }