class="identifier">string</span> <span class="parameter">accessTokenOrAppKey</span>,
	<span class="identifier">string</span> <span class="parameter">agentId</span>,
	<span class="identifier">string</span> <span class="parameter">content</span>,
	<span class="identifier">string</span> <span class="parameter">toUser</span> = <span class="keyword">null</span>,
	<span class="identifier">string</span> <span class="parameter">toParty</span> = <span class="keyword">null</span>,
	<span class="identifier">string</sp