ss="token keyword">fun </span><a href="on.html"><span class="token function">on</span></a><span class="token punctuation">(</span><span class="parameters "><span class="parameter ">expression<span class="token operator">: </span><a href="../../-expression/index.html">Expression</a></span></span><span class="token punctuation">)</span><span class="token operator">: </span><a href="../index.html">Join</a></div></div>                  </div>
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