lib/twilio-ruby/framework/serialize.rb in twilio-ruby-5.0.0.rc21 vs lib/twilio-ruby/framework/serialize.rb in twilio-ruby-5.0.0.rc22

@@ -1,8 +1,10 @@
 module Twilio
   def self.serialize_iso8601(date)
-    if date
+    if date.eql?(:unset)
+      date
+    elsif date
       date.iso8601
     end
   end
 
   def self.deserialize_rfc2822(date)
@@ -17,10 +19,9 @@
     end
   end
 
   def self.serialize_object(object)
     if object.is_a?(Hash) or object.is_a?(Array)
-      require 'json'
       JSON.generate(object)
     else
       object
     end
   end