Inherited method establishing logic needs to be MetaClass aware

Currently when I add methods to a super class with ExpandoMetaClass the child class is not able to see these new methods. This is because the logic that establishes the super methods is all private and only takes methods from the java.lang.Class instances and DGM:

private void fillMethodIndex() {
      ...

       inheritMethods(superClasses,classMethodIndex);

Instead inheritMethods needs to retrieve the MetaClass of the parent class, initialize it if it isn't already initialized and then get all the MetaMethod instances from it that don't already exist