Bug 15604 Promote Fill arguments on method completion to a real preference
It is still in work in progress but it has become an established feature by now. Promote the preference to the code assist preference page.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/java/JavaCompletionProcessor.java
results= fCollector.getResults();
		}
		if (fTemplateEngine != null) {
			try {
				fTemplateEngine.reset();
				fTemplateEngine.complete(viewer, offset, unit);
			} catch (JavaModelException x) {
				Shell shell= viewer.getTextWidget().getShell();
				ErrorDialog.openError(shell, JavaTextMessages.getString("CompletionProcessor.error.accessing.title"), JavaTextMessages.getString("CompletionProcessor.error.accessing.message"), x.getStatus()); 
			}				
			
			IJavaCompletionProposal[] templateResults= fTemplateEngine.getResults();
	
			
			IJavaCompletionProposal[] total= new IJavaCompletionProposal[results.length + templateResults.length];
			System.arraycopy(templateResults, 0, total, 0, templateResults.length);
			System.arraycopy(results, 0, total, templateResults.length, results.length);
			results= total;
		}
		
		fNumberOfComputedResults= (results == null ? 0 : results.length);
		
		/*
		 * Order here and not in result collector to make sure that the order
		 * applies to all proposals and not just those of the compilation unit. 
		 */
		return order(results);
	}
}