add comment to scenario, explaining model config

Author: jmatejcz

src/rai_bench/rai_bench/benchmark_model.py

@@ -126,9 +126,11 @@ class Scenario(BaseModel):
 
     task: Task
     scene_config: SimulationConfig
-    model_config = ConfigDict(
-        arbitrary_types_allowed=True
-    )  # pydantic does not support ABC classes
+    # TODO pydantic does not support ABC classes
+    # model_config field is used to define additional configurations to a model.
+    # Param arbitrary_types_allowed=True, allows a field with
+    # an abstract class like SimulationConfig.Without it pydantic will throw validation error
+    model_config = ConfigDict(arbitrary_types_allowed=True)
 
 
 class Benchmark: