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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 AddAttributePath(self, **_):
 """Adds a path component to the current attribute."""

    attribute_path = self.current_expression.attribute
    if not attribute_path:
      attribute_path = []

    attribute_path.append(self.string)
    self.current_expression.SetAttribute(attribute_path)