public boolean hasMessageOf(String property) {
        assertArgumentNotNull("property", property);
        final UserMessageItem item = getPropertyItem(property);
        return item != null && !item.getMessageList().isEmpty();
    }
public boolean hasMessageOf ( String property ) { assertArgumentNotNull ( "property" , property ) ; final UserMessageItem item = getPropertyItem ( property ) ; return item != null && ! item . getMessageList ( ) . isEmpty ( ) ; }
Does the property has user message?
@param property the name of property, which may have user messages. (NotNull)
@return The determination, true or false.