Testing cleanup (IntereationExec) and docs.

4 jobs for master in 1 minute and 26 seconds (queued for 1 second)
Status Job ID Name Coverage
  Testing
passed #99452407
verify:jdk11

00:01:26

94.0%
passed #99452406
verify:jdk8

00:01:13

94.0%
 
  External
passed codecov/patch

100.0%
passed codecov/project

88.35275%