code: def get(self, node, path):
          
          node, parts = self.__start(node, path)
          for part in parts:
              if part == "..":
                  node = node.parent
              elif part in ("", "."):
                  pass
              else:
                  node = self.__get(node, part)
          return node
docs: Return instance at `path`.
  
          An example module tree:
  
          >>> from anytree import Node
          >>> top = Node("top", parent=None)
          >>> sub0 = Node("sub0", parent=top)
          >>> sub0sub0 = Node("sub0sub0", parent=sub0)
          >>> sub0sub1 = Node("sub0sub1", parent=sub0)
          >>> sub1 = Node("sub1", parent=top)
  
          A resolver using the `name` attribute:
  
          >>> r = Resolver('name')
  
          Relative paths:
  
          >>> r.get(top, "sub0/sub0sub0")
          Node('/top/sub0/sub0sub0')
          >>> r.get(sub1, "..")
          Node('/top')
          >>> r.get(sub1, "../sub0/sub0sub1")
          Node('/top/sub0/sub0sub1')
          >>> r.get(sub1, ".")
          Node('/top/sub1')
          >>> r.get(sub1, "")
          Node('/top/sub1')
          >>> r.get(top, "sub2")
          Traceback (most recent call last):
            ...
          anytree.resolver.ChildResolverError: Node('/top') has no child sub2. Children are: 'sub0', 'sub1'.
  
          Absolute paths:
  
          >>> r.get(sub0sub0, "/top")
          Node('/top')
          >>> r.get(sub0sub0, "/top/sub0")
          Node('/top/sub0')
          >>> r.get(sub0sub0, "/")
          Traceback (most recent call last):
            ...
          anytree.resolver.ResolverError: root node missing. root is '/top'.
          >>> r.get(sub0sub0, "/bar")
          Traceback (most recent call last):
            ...
          anytree.resolver.ResolverError: unknown root node '/bar'. root is '/top'.