Imagine you need to determine the version of Apache commons-lang dependency in ZooKeeper 3.6.2. The easiest way to do this is to find the artifact page in the mvn repository. For ZooKeeper 3.6.2: https://mvnrepository.com/artifact/org.apache.zookeeper/zookeeper/3.6.2.
On the page, you need to find the Compile Dependencies section, and find the required dependency there. In our case, the commons-lang 2.6 dependency is used:
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