code: public ClassFile[] getInnerClasses() {
          if (mInnerClasses == null) {
              return new ClassFile[0];
          }
  
          return mInnerClasses.toArray(new ClassFile[mInnerClasses.size()]);
      }
docs: Returns all the inner classes defined in this class. If no inner classes
  are defined, then an array of length zero is returned.