mvvmfx-validation/src/main/java/de/saxsys/mvvmfx/utils/validation/CompositeValidationStatus.java
void removeMessage(final Validator validator) {
		final int validatorHash = System.identityHashCode(validator);

		if(validatorToMessagesMap.containsKey(validatorHash)){

			final List<Integer> messageHashesOfThisValidator = validatorToMessagesMap.get(validatorHash);

			getMessagesInternal().removeIf(message -> {
				int hash = System.identityHashCode(message);

				return messageHashesOfThisValidator.contains(hash);
			});

			validatorToMessagesMap.remove(validatorHash);
		}
	}
void removeMessage(final Validator validator) {
		final int validatorHash = System.identityHashCode(validator);

		if(validatorToMessagesMap.containsKey(validatorHash)){

			final List<Integer> messageHashesOfThisValidator = validatorToMessagesMap.get(validatorHash);

			getMessagesInternal().removeIf(message -> {
				int hash = System.identityHashCode(message);

				return messageHashesOfThisValidator.contains(hash);
			});

			validatorToMessagesMap.remove(validatorHash);
		}
	}
/*
Remove all messages for this particular validator.