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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 delaunay_2d(self, tol=1e-05, alpha=0.0, offset=1.0, bound=False):
 """Apply a delaunay 2D filter along the best fitting plane. This extracts the grid's points and perfoms the triangulation on those alone. """

        return PolyData(self.points).delaunay_2d(tol=tol, alpha=alpha, offset=offset, bound=bound)