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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 apply_transform(self, transform):
 """ Apply a homogenous transformation to the PointCloud object in- place. Parameters transform : (4, 4) float Homogenous transformation to apply to PointCloud """

        self.vertices = transformations.transform_points(self.vertices,
                                                         matrix=transform)