document the return value of add_attribute

diff --git a/lib/Class/MOP/Class.pm b/lib/Class/MOP/Class.pm
index 122ed9a..0b8efcc 100644 (file)
--- a/lib/Class/MOP/Class.pm
+++ b/lib/Class/MOP/Class.pm
@@ -1793,6 +1793,8 @@ class when the attribute is added.
 If an attribute of the same name already exists, the old attribute
 will be removed first.
 
+The added attribute will be returned.
+
 =item B<< $metaclass->remove_attribute($attribute_name) >>
 
 This will remove the named attribute from the class, and