lib/json/add/time.rb in json_pure-1.8.1 vs lib/json/add/time.rb in json_pure-1.8.2

@@ -8,10 +8,10 @@
   # Deserializes JSON string by converting time since epoch to Time
   def self.json_create(object)
     if usec = object.delete('u') # used to be tv_usec -> tv_nsec
       object['n'] = usec * 1000
     end
-    if instance_methods.include?(:tv_nsec)
+    if method_defined?(:tv_nsec)
       at(object['s'], Rational(object['n'], 1000))
     else
       at(object['s'], object['n'] / 1000)
     end
   end