refact

pina/model/layers/messa_passing.py

@@ -0,0 +1,11 @@
+""" Module for Averaging Neural Operator Layer class. """
+
+from torch import nn, mean
+from torch_geometric.nn import MessagePassing, InstanceNorm, radius_graph
+
+from pina.utils import check_consistency
+
+
+class MessagePassingBlock(nn.Module):
+
+