Refactored code

src/cpl/configuration/configuration_abc.py

@@ -0,0 +1,31 @@
+from abc import abstractmethod, ABC
+from collections import Callable
+from typing import Type
+
+from cpl.configuration.configuration_model_abc import ConfigurationModelABC
+from cpl.environment.environment_abc import EnvironmentABC
+
+
+class ConfigurationABC(ABC):
+
+    @abstractmethod
+    def __init__(self): pass
+
+    @property
+    @abstractmethod
+    def environment(self) -> EnvironmentABC: pass
+
+    @abstractmethod
+    def add_environment_variables(self, prefix: str): pass
+
+    @abstractmethod
+    def add_argument_variables(self): pass
+
+    @abstractmethod
+    def add_json_file(self, name: str, optional: bool = None): pass
+
+    @abstractmethod
+    def add_configuration(self, key_type: type, value: object): pass
+
+    @abstractmethod
+    def get_configuration(self, search_type: Type[ConfigurationModelABC]) -> Callable[ConfigurationModelABC]: pass