org.zkoss.zk.au.AuWriters.ContentType
Property: org.zkoss.zk.au.AuWriters.ContentType
Default: text/plain;charset=UTF-8
It specifies the Content-Type of the AU response.
For example:
<library-property>
<name>org.zkoss.zk.au.AuWriters.ContentType</name>
<value>json/application;charset=UTF-8</value>
</library-property>