ags();</span>
<span class="source-line-no">053</span><span id="line-53"></span>
<span class="source-line-no">054</span><span id="line-54">    }</span>
<span class="source-line-no">055</span><span id="line-55"></span>
<span class="source-line-no">056</span><span id="line-56">    public String popFirstArg() {</span>
<span class="source-line-no">057</span><span id="line-57">        return !args.isEmpty() ? args.remove(0) : null;</span>
<span class="source-line-no">058</span><span id="line-58">    }</span>
<spa