Apply changes from code review.

src/primaite/simulator/core.py

@@ -127,6 +127,7 @@ class SimComponent(BaseModel):
     """Extension of pydantic BaseModel with additional methods that must be defined by all classes in the simulator."""
 
     model_config = ConfigDict(arbitrary_types_allowed=True, extra=Extra.allow)
+    """Configure pydantic to allow arbitrary types and to let the instance have attributes not present in model."""
 
     uuid: str
     """The component UUID."""

src/primaite/simulator/domain/account.py

@@ -55,9 +55,9 @@ class Account(SimComponent):
         self.enabled = False
 
     def log_on(self) -> None:
-        """TODO."""
+        """TODO. Once the accounts are integrated with nodes, populate this accordingly."""
         self.num_logons += 1
 
     def log_off(self) -> None:
-        """TODO."""
+        """TODO. Once the accounts are integrated with nodes, populate this accordingly."""
         self.num_logoffs += 1