What would you like to be added/modified:

I propose refactoring the configuration parsing logic in the TestEnv and Dataset core classes to move away from dynamic attribute assignment (self.dict[k] = v).

Why is this needed:

The current reliance on dict for configuration parsing presents several issues:

• Security Risks: It allow for uncontrolled attribute injection, where any key in a user supplied YAML file becomes an attribute on a core class instance. This could lead to unintended state manipulation.

• Low Maintainability: It is difficult to distinguish between the class's intended internal state and parameters dynamically added from configuration files.