code: public void remove(String fqn) {
          awaitRunning();
          try {
              channel.send(new Message(null, new Request(Request.REMOVE, fqn)));
          } catch (Exception ex) {
              LOG.error("failure bcasting REMOVE request", ex);
          }
      }
docs: Removes the node from the tree.
  
  @param fqn The fully qualified name of the node.