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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 intersects_id(self, ray_origins, ray_directions, return_locations=False, multiple_hits=True, **kwargs):
 """ Find the intersections between the current mesh and a list of rays. Parameters ray_origins: (m,3) float, ray origin points ray_directions: (m,3) float, ray direction vectors multiple_hits: bool, consider multiple hits of each ray or not return_locations: bool, return hit locations or not Returns index_triangle: (h,) int, index of triangles hit index_ray: (h,) int, index of ray that hit triangle locations: (h,3) float, (optional) position of intersection in space """

        (index_tri,
         index_ray,
         locations) = ray_triangle_id(triangles=self.mesh.triangles,
                                      ray_origins=ray_origins,
                                      ray_directions=ray_directions,
                                      tree=self.mesh.triangles_tree,
                                      multiple_hits=multiple_hits,
                                      triangles_normal=self.mesh.face_normals)
        if return_locations:
            if len(index_tri) == 0:
                return index_tri, index_ray, locations
            unique = grouping.unique_rows(np.column_stack((locations,
                                                           index_ray)))[0]
            return index_tri[unique], index_ray[unique], locations[unique]
        return index_tri, index_ray