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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 read(self):
 """ This module is lazy-loaded by default. You can read all internal structure by calling this method. """

        stack = [self[0].child]
        while stack:
            current = stack.pop()
            if current.right:
                stack.append(current.right)
            if current.left:
                stack.append(current.left)

        self[0].seek(0)