ion<span class="token punctuation">.</span><span class="token function">register</span><span class="token punctuation">(</span><span class="token string">'notification:message'</span><span class="token punctuation">,</span> Message<span class="token punctuation">,</span> <span class="token punctuation">{</span> <span class="token literal-property property">singleton</span><span class="token operator">:</span> <span class="token boolean">false</span> <span class="token punctuation">}</span><span class="token