<dependency>
<groupId>org.atmosphere.extensions</groupId>
<artifactId>atmosphere-gwt20-server</artifactId>
<version>2.4.20</version>
</dependency>
@Grapes(
@Grab(group='org.atmosphere.extensions', module='atmosphere-gwt20-server', version='2.4.20')
)
<dependency org="org.atmosphere.extensions" name="atmosphere-gwt20-server" rev="2.4.20" />