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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 attackers(self, color: Color, square: Square) -> "SquareSet": """ Gets a set of attackers of the given color for the given square. Pinned pieces still count as attackers. Returns a :class:`set of squares <chess.SquareSet>`. """

        return SquareSet(self.attackers_mask(color, square))