[PHP] [StepStrategy] Extract method in order to be able to automatically move it

Author: JavierCane

examples/php/php-step_strategy-02_replace_type_code_with_strategy/src/Step.php

@@ -23,6 +23,11 @@ public function __construct(string $title, int $typeCode, ?int $videoDurationInM
     }
 
     public function estimatedCompletionMinutes(): int
+    {
+        return $this->stepEstimatedCompletionMinutes();
+    }
+
+    public function stepEstimatedCompletionMinutes()
     {
         $estimation = 0;