Enhanced ExecutionContext to keep track of the execution flow

tests/test_sheerkaSerializer.py

@@ -2,7 +2,7 @@ import pytest
 from dataclasses import dataclass
 
 from sdp.sheerkaDataProvider import Event
-from sdp.sheerkaSerializer import Serializer, ObjectSerializer, SerializerContext
+from sdp.sheerkaSerializer import Serializer, JsonSerializer, SerializerContext
 from datetime import datetime
 import core.utils
 
@@ -37,7 +37,7 @@ def test_i_can_serialize_an_event():
 def test_i_can_serialize_an_object():
     obj = Obj("10", "value")
     serializer = Serializer()
-    serializer.register(ObjectSerializer("tests.test_sheerkaSerializer.Obj"))
+    serializer.register(JsonSerializer("tests.test_sheerkaSerializer.Obj"))
     context = SerializerContext("kodjo", "6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b")
 
     stream = serializer.serialize(obj, context)