Array.prototype.slice.call(arguments);
    fn = args[<span class="number">0</span>];
    vargs = args.slice(<span class="number">1</span>, args.length - <span class="number">1</span>);
    callback = args[args.length - <span class="number">1</span>];
    <span class="keyword">return</span> <span class="keyword">new</span> FunctionCall(fn, vargs, callback);
};</pre></div></div>
            
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