If the node supports this operation it should be overloaded in the subclass
if this function gets called it means that the node did not properly overload
the function, so the user just told the program to do something that it cannot
all this function does is print out an error message to that effect
If the node supports this operation it should be overloaded in the subclass
if this function gets called it means that the node did not properly overload
the function, so the user just told the program to do something that it cannot
all this function does is print out an error message to that effect