def getRoot(self):
root = Node(self.dumpHierarchy())<EOL>self._linkParent(root)<EOL>return root<EOL>
Dump a hierarchy immediately from target runtime and store into a Node (subclass of :py:class:`AbstractNode 
<poco.sdk.AbstractNode>`) object.

Returns:
    :py:class:`inherit from AbstractNode <Node>`: Each time a new node instance is created by latest hierarchy 
     data.