Improved documentation for cpl.application

src/cpl/application/startup_abc.py

@@ -5,25 +5,28 @@ from cpl.dependency_injection.service_provider_abc import ServiceProviderABC
 
 
 class StartupABC(ABC):
+    r"""ABC for the startup class"""
 
     @abstractmethod
     def __init__(self, *args):
-        """
-        ABC for a startup class
-        """
+        pass
 
     @abstractmethod
     def configure_configuration(self) -> ConfigurationABC:
-        """
-        Creates configuration of application
-        :return: configuration
+        r"""Creates configuration of application
+
+        Returns
+        -------
+            Object of :class:`cpl.configuration.configuration_abc.ConfigurationABC`
         """
         pass
 
     @abstractmethod
     def configure_services(self) -> ServiceProviderABC:
-        """
-        Creates service provider
-        :return: service provider
+        r"""Creates service provider
+
+        Returns
+        -------
+            Object of :class:`cpl.dependency_injection.service_provider_abc.ServiceProviderABC`
         """
         pass