Method forward

h′(l) = MHA(LN(h(l−1))) + h(l−1) h(l) = FFN(LN(h′(l))) + h′(l) :param x: node feature matrix :param edge_attr: edge feature matrix :param b: spatial Encoding matrix :param edge_paths: pairwise node paths in edge indexes :param ptr: batch poin

(self,
                x: torch.Tensor,
                edge_attr: torch.Tensor,
                b: torch,
                edge_paths,
                ptr)