'org.json4s:json4s-ext_2.10:3.2.2'
<dependency>
<groupId>org.json4s</groupId>
<artifactId>json4s-ext_2.10</artifactId>
<version>3.2.2</version>
</dependency>
<dependency org="org.json4s" name="json4s-ext_2.10" rev="3.2.2"/>
"org.json4s", "json4s-ext_2.10", "3.2.2"