return is a memoryview

Author: Christian-B

gfe_examples/template/template_vertex.py

@@ -120,7 +120,7 @@ def _write_app_memory_regions(self, spec: DataSpecificationGenerator,
         spec.write_value(int(key is not None))
         spec.write_value(0 if key is None else key)
 
-    def read(self) -> bytes:
+    def read(self) -> memoryview:
         """
         Get the recorded data.