3 files changed, 7 insertions, 7 deletions
diff --git a/activerecord/lib/active_record/aggregations.rb b/activerecord/lib/active_record/aggregations.rb
index 7286837ac7..3250e29b82 100644
--- a/activerecord/lib/active_record/aggregations.rb
+++ b/activerecord/lib/active_record/aggregations.rb
@@ -3,8 +3,6 @@
 module ActiveRecord
   # See ActiveRecord::Aggregations::ClassMethods for documentation
   module Aggregations
-    extend ActiveSupport::Concern
-
     def initialize_dup(*) # :nodoc:
       @aggregation_cache = {}
       super
diff --git a/activerecord/lib/active_record/core.rb b/activerecord/lib/active_record/core.rb
index 9c9fc77a0d..20d9e7a9ca 100644
--- a/activerecord/lib/active_record/core.rb
+++ b/activerecord/lib/active_record/core.rb
@@ -139,11 +139,6 @@ module ActiveRecord
     end
 
     module ClassMethods # :nodoc:
-      def allocate
-        define_attribute_methods
-        super
-      end
-
       def initialize_find_by_cache # :nodoc:
         @find_by_statement_cache = { true => Concurrent::Map.new, false => Concurrent::Map.new }
       end
diff --git a/activerecord/lib/active_record/no_touching.rb b/activerecord/lib/active_record/no_touching.rb
index 754c891884..697076bdae 100644
--- a/activerecord/lib/active_record/no_touching.rb
+++ b/activerecord/lib/active_record/no_touching.rb
@@ -43,6 +43,13 @@ module ActiveRecord
         end
     end
 
+    # Returns +true+ if the class has +no_touching+ set, +false+ otherwise.
+    #
+    #   Project.no_touching do
+    #     Project.first.no_touching? # true
+    #     Message.first.no_touching? # false
+    #   end
+    #
     def no_touching?
       NoTouching.applied_to?(self.class)
     end