Bug 123946 [quick assist] "Add keyword 'final' to all unchanged variables and properties"
This function can be provide with the "Format" function
org.eclipse.jdt.ui.tests/ui/org/eclipse/jdt/ui/tests/quickfix/AssistQuickFixTest.java
buf.append("public class E {\n");
		buf.append("    public void foo() {\n");
		buf.append("        final int i[] = null;\n");
		buf.append("    }\n");
		buf.append("}\n");
		ICompilationUnit cu= pack1.createCompilationUnit("E.java", buf.toString(), false, null);
		
		String str= "i[]";
		AssistContext context= getCorrectionContext(cu, buf.toString().indexOf(str), 0);
		List proposals= collectAssists(context, false);
		
		assertNumberOfProposals(proposals, 1);
		assertCorrectLabels(proposals);
		
		CUCorrectionProposal proposal= (CUCorrectionProposal) proposals.get(0);
		String preview= getPreviewContent(proposal);
		buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("public class E {\n");
		buf.append("    public void foo() {\n");
		buf.append("        final int i[];\n");
		buf.append("        i = null;\n");
		buf.append("    }\n");
		buf.append("}\n");
		assertEqualString(preview, buf.toString());	
	}	
	
	public void testJoinDeclaration1() throws Exception {
		IPackageFragment pack1= fSourceFolder.createPackageFragment("test1", false, null);
		StringBuffer buf= new StringBuffer();