define( function() {
  
  "use strict";

  
  function addGetHookIf( conditionFn, hookFn ) {

  	// Define the hook, we'll check on the first run if it's really needed.
  	return {
  		get: function() {

  			if ( conditionFn() ) {

  				// Hook not needed (or it's not possible to use it due
  				// to missing dependency), remove it.

  				delete this.get;
  				return;
  			}
  
  			// Hook needed; redefine it so that the support test is not executed again.

  			return ( this.get = hookFn ).apply( this, arguments );

  		}
  	};
  }
  
  return addGetHookIf;

  } );