<dependency>
<groupId>org.atmosphere.extensions</groupId>
<artifactId>atmosphere-gwt20-server</artifactId>
<version>2.2.0-RC1</version>
</dependency>
libraryDependencies += "org.atmosphere.extensions" % "atmosphere-gwt20-server" % "2.2.0-RC1"
@Grapes(
@Grab(group='org.atmosphere.extensions', module='atmosphere-gwt20-server', version='2.2.0-RC1')
)
<dependency org="org.atmosphere.extensions" name="atmosphere-gwt20-server" rev="2.2.0-RC1" />