Smack core components.
'org.igniterealtime.smack:smack-core:4.2.0-alpha2'
<dependency>
<groupId>org.igniterealtime.smack</groupId>
<artifactId>smack-core</artifactId>
<version>4.2.0-alpha2</version>
</dependency>
<dependency org="org.igniterealtime.smack" name="smack-core" rev="4.2.0-alpha2"/>
"org.igniterealtime.smack", "smack-core", "4.2.0-alpha2"