@param name this node's name (can be null, must not contain {@link #PATH_SEPARATOR})
   * @param location this node's location 
   * @param parent this node's parent node
   * @param level this node's level in the tree
@param name this node's name (can be null, must not contain {@link #PATH_SEPARATOR})
   * @param location this node's location 
   * @param parent this node's parent node
   * @param level this node's level in the tree | NodeBase.java