'org.apache.logging.log4j:log4j-api:2.0-beta4'
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.0-beta4</version>
</dependency>
<dependency org="org.apache.logging.log4j" name="log4j-api" rev="2.0-beta4"/>
"org.apache.logging.log4j", "log4j-api", "2.0-beta4"