null
'com.emc.vipr:s3-client:2.0.3'
<dependency> <groupId>com.emc.vipr</groupId> <artifactId>s3-client</artifactId> <version>2.0.3</version> </dependency>
<dependency org="com.emc.vipr" name="s3-client" rev="2.0.3"/>
"com.emc.vipr", "s3-client", "2.0.3"