ch (idx) {<a name="line.88"></a>
<span class="sourceLineNo">089</span>        case 0: return this.wrapper0;<a name="line.89"></a>
<span class="sourceLineNo">090</span>        case 1: return this.wrapper1;<a name="line.90"></a>
<span class="sourceLineNo">091</span>        case 2: return this.wrapper2;<a name="line.91"></a>
<span class="sourceLineNo">092</span>        case 3: return this.wrapper3;<a name="line.92"></a>
<span class="sourceLineNo">093</span>        default: return OCamlUnit.WRAPPER;<a name="lin