dojo.lang.isUndefined = function(/*anything*/ it){  // summary: Return true if it is not defined.  // description:  //    WARNING - In some cases, isUndefined will not behave as you  //    might expect. If you do isUndefined(foo) and there is no earlier  //    reference to foo, an error will be thrown before isUndefined is  //    called. It behaves correctly if you scope yor object first, i.e.  //    isUndefined(foo.bar) where foo is an object and bar isn't a  //    property of the object.  //  // Recommendation - Use typeof foo == "undefined" when possible  return ((typeof(it) == "undefined")&&(it == undefined)); // Boolean}
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