This allows for reuse in jdt.ls.

Signed-off-by: Odin Dahlström <zerodind@gmail.com>
Change-Id: Ie538e74a263e0762fc0596d302caf73f3c51fb33
Reviewed-on: https://git.eclipse.org/r/c/jdt/eclipse.jdt.ui/+/190713
Tested-by: JDT Bot <jdt-bot@eclipse.org>
Reviewed-by: Roland Grunberg <rgrunber@redhat.com>