Less Stringable

src/FactorGraphs/Factor.php

@@ -77,7 +77,7 @@ abstract class Factor
 
     protected function updateMessageVariable(Message $message, Variable $variable): float
     {
-        throw new Exception();
+        throw new Exception("Must override updateMessageVariable(" . $message::class . ", " . $variable::class . ")");
     }
 
     /**

src/FactorGraphs/FactorGraphLayer.php

@@ -70,7 +70,7 @@ abstract class FactorGraphLayer
     /**
      * @param Schedule[] $itemsToSequence
      */
-    protected function scheduleSequence(array $itemsToSequence, string $name): ScheduleSequence
+    protected function scheduleSequence(array $itemsToSequence): ScheduleSequence
     {
         return new ScheduleSequence($itemsToSequence);
     }