           I[attrName]
 
     ###*
-    Extends this object with methods from the passed in object. `before` and 
-    `after` are special option names that glue functionality before or after 
-    existing methods.
+    Extends this object with methods from the passed in object. A shortcut for
+    <code>Object.extend(self, methods)</code>
 
     <code><pre>
     I =

      increaseSpeed: ->
        I.maxSpeed += 1

      # this will execute before the update method
      beforeUpdate: ->
        checkPowerupStatus()

    player.I.maxSpeed
    => 5



    @name extend
    @methodOf Core#
    @see Object.extend
    @returns self
    ###
    extend: (options) ->
      Object.extend self, options
