Начало разработки обучения.

_incl_data/class/DarksLight2/Training/TrainingException.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace DarksLight2\Training;
+
+use Exception;
+
+class TrainingException extends Exception
+{
+    public static function alreadyRegistered(): self
+    {
+        return new self("The steps have been registered before");
+    }
+
+    public static function noRenderingFile(): self
+    {
+        return new self("Rendering file missing");
+    }
+}