From fecc4e325b697babeca17422dd610191e91f11c6 Mon Sep 17 00:00:00 2001
From: Greg Anderson <greg.1.anderson@greenknowe.org>
Date: Fri, 9 Sep 2016 18:53:44 -0700
Subject: [PATCH] Clarify comment about collection builders.

---
 src/Runner.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Runner.php b/src/Runner.php
index 595fe4d53..823fbee93 100644
--- a/src/Runner.php
+++ b/src/Runner.php
@@ -189,7 +189,8 @@ protected function instantiateCommandClass($commandClass)
             $commandClass = $container->get($commandFileName);
         }
         // If the command class is a Builder Aware Interface, then
-        //
+        // ensure that it has a builder.  Every command class needs
+        // its own collection builder, as they have references to each other.
         if ($commandClass instanceof BuilderAwareInterface) {
             $builder = $container->get('collectionBuilder', [$commandClass]);
             $commandClass->setBuilder($builder);