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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def IntersectPath(self, path, intersection):
 """Calculates the intersection part of a field path with this tree. Args: path: The field path to calculates. intersection: The out tree to record the intersection part. """

    node = self._root
    for name in path.split('.'):
      if name not in node:
        return
      elif not node[name]:
        intersection.AddPath(path)
        return
      node = node[name]
    intersection.AddLeafNodes(path, node)