This clean up simplifies expression lambdas by using method reference.
Improves the readability by removing unnecessary syntax.
jSparrow Clean up.

Updated Snippet070GenericSelectionDialog to use the refactored method in
AbstractSelectionDialog.

4.17 version update for org.eclipse.jface.snippets

Change-Id: I0e215bc1484c5c859bf904cb52687b4dce8cf289
Signed-off-by: Ardit Ymeri <ardit.ymeri@splendit.at>
Also-by: Karsten Thoms <karsten.thoms@karakun.com>