n class="source-line-no">059</span><span id="line-59"></span>
<span class="source-line-no">060</span><span id="line-60">    public String popLastArg() {</span>
<span class="source-line-no">061</span><span id="line-61">        return !args.isEmpty() ? args.remove(args.size() - 1) : null;</span>
<span class="source-line-no">062</span><span id="line-62">    }</span>
<span class="source-line-no">063</span><span id="line-63"></span>
<span class="source-line-no">064</span><span id="line-64">    public String getF