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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 html(self) -> str: """Return string representation of this. Used in start tag of HTML representation of the Element node. """

        if self._owner and self.name in self._owner._special_attr_boolean:
            return self.name
        else:
            value = self.value
            if isinstance(value, str):
                value = html_.escape(value)
            return '{name}="{value}"'.format(name=self.name, value=value)