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(function() {
var counter = 0;
var numbered;
var source = document.getElementsByClassName('prettyprint source');
if (source && source[0]) {
source = source[0].getElementsByTagName('code')[0];
numbered = source.innerHTML.split('\n');
numbered = numbered.map(function(item) {
counter++;
return '<span id="line' + counter + '" class="line"></span>' + item;
});
source.innerHTML = numbered.join('\n');
}
})();
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