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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 encode(self):
 """ Encodes the value of the field and put it in the element also make the check for nil=true if there is one :return: returns the encoded element :rtype: xml.etree.ElementTree.Element """

        element = ElementTree.Element(self.name)
        element = self._set_nil(element, lambda value: str(value))
        return element