Mongoid public method issue

proxy.rb.diff

diff --git a/lib/mongoid/association/proxy.rb b/lib/mongoid/association/proxy.rb
index 6392cb799..91ecf7126 100644
--- a/lib/mongoid/association/proxy.rb
+++ b/lib/mongoid/association/proxy.rb
@@ -100,6 +100,14 @@ def substitutable
         _target
       end

+      def send(method, *args)
+        if respond_to?(method)
+          super
+        else
+          _target.send(method, *args)
+        end
+      end
+
       protected

       # Get the collection from the root of the hierarchy.
@@ -134,7 +142,7 @@ def characterize_one(document)
       # @param [ Array ] args The arguments passed to the method.
       #
       def method_missing(name, *args, &block)
-        _target.send(name, *args, &block)
+        _target.public_send(name, *args, &block)
       end

       # @api private