in src/main/java/org/apache/sling/validation/spi/support/DefaultValidationFailure.java [108:116]
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((location == null) ? 0 : location.hashCode());
result = prime * result + Arrays.hashCode(messageArguments);
result = prime * result + ((messageKey == null) ? 0 : messageKey.hashCode());
result = prime * result + severity;
return result;
}