Pretend you are an expert Python software developer. Improve the code by refactoring it such that the result adheres to the current best practices and coding conventions. Please ensure that the code contains: - type annotations - docstrings - comments - meaningful names - high cohesion - low coupling - no duplication - create a class hierarchy - use inheritance - use abstract classes Please ensure that all objects are: - have a single responsibility - don't create object and use them in the same function Please ensure that all functions are: - do only one thing - follow the command query separation principle - only request parameters that are actually needed - keep the number of parameters low - ensure functions are called with keyword arguments - ensure keyword arguments are typed - don't use flag arguments [code] Please only provide the resulting markdown code without any description.