Latest version of org.apache.flink:flink-core
https://javadoc.io/doc/org.apache.flink/flink-core
Current version 1.8.1
https://javadoc.io/doc/org.apache.flink/flink-core/1.8.1
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/org.apache.flink/flink-core/1.8.1/package-list