def find_local_node(name, parent)
      @nodes.find {|r| r.name == name.to_sym and r.parent == parent}
    end
def find_local_node(name, parent)
      @nodes.find {|r| r.name == name.to_sym and r.parent == parent}
    end
Search for a local node, return <tt>Node::*</tt> or <tt>nil</tt>.

   find_node(:hello)                   # Search at root.
   find_node(:hello, :parent => grp)   # Search in `grp` group.

 See also: #find_node.