docs: @Override
      public final OperationEntry getOperationEntry(final PathAddress pathAddress, final String operationName) {
  
          if (parent != null) {
              RootInvocation ri = getRootInvocation();
              return ri.root.getOperationEntry(ri.pathAddress.append(pathAddress), operationName);
          }
          // else we are the root
  
          OperationEntry inheritable = getInheritableOperationEntry(operationName);
          return getOperationEntry(pathAddress.iterator(), operationName, inheritable);
      }