Latest version of com.squareup.retrofit2:adapter-rxjava2
https://javadoc.io/doc/com.squareup.retrofit2/adapter-rxjava2
Current version 2.6.3
https://javadoc.io/doc/com.squareup.retrofit2/adapter-rxjava2/2.6.3
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/com.squareup.retrofit2/adapter-rxjava2/2.6.3/package-list