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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 generic_parse(self, node, pad=0):
 """A Generic parser for arbitrary tags in a node. Parameters: - node: A node in the DOM. - pad: `int` (default: 0) If 0 the node data is not padded with newlines. If 1 it appends a newline after parsing the childNodes. If 2 it pads before and after the nodes are processed. Defaults to 0. """

        npiece = 0
        if pad:
            npiece = len(self.pieces)
            if pad == 2:
                self.add_text('\n')
        for n in node.childNodes:
            self.parse(n)
        if pad:
            if len(self.pieces) > npiece:
                self.add_text('\n')