moving from _full_access_name to callbacks

tests/__init__.py

@@ -0,0 +1,13 @@
+from typing import Any
+
+from pyDataInterface import DataService
+
+
+def emit(self: Any, parent_path: str, name: str, value: Any) -> None:
+    if isinstance(value, DataService):
+        value = value.serialize()
+
+    print(f"{parent_path}.{name} = {value}")
+
+
+DataService._emit_notification = emit  # type: ignore