bug 381318: Add Javadoc to getConfigured-Properties and exec-Operations 
https://bugs.eclipse.org/bugs/show_bug.cgi?id=381318
Change-Id: I03f68a69b519e21abdd7f0d7752df07ab0839862
Signed-off-by: Judith Gull <jgu@bsiag.com>
Reviewed-on: https://git.eclipse.org/r/35724