Bug 79507 [quick assist] "Inverse if statement" quick assist doesn't work
"Inverse if statement" quick assist replaces if (args.length > 5) System.out.println("OK"); else if (args.length < 3) System.out.println("KO"); with if (args.length <= 5) if (args.length < 3) System.out.println("KO"); else System.out.println("OK");
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/correction/AdvancedQuickAssistProcessor.java
if (!(returnType instanceof PrimitiveType)
				|| ((PrimitiveType) returnType).getPrimitiveTypeCode() != PrimitiveType.VOID)
			return false;
		
		List statements = coveringMetod.getBody().statements();
		int ifIndex = statements.indexOf(ifStatement);
		if (ifIndex == -1) {
			return false;
		}
		
		if (resultingCollections == null) {
			return true;
		}
		
		AST ast = coveringStatement.getAST();
		ASTRewrite rewrite = ASTRewrite.create(ast);
		
		ListRewrite listRewriter = rewrite.getListRewrite(thenBlock,
			(ChildListPropertyDescriptor) ifStatement.getLocationInParent());
		listRewriter.remove((ASTNode) thenStatements.get(thenStatements.size() - 1), null);
		
		Expression conditionPlaceholder = (Expression) rewrite.createMoveTarget(ifStatement.getExpression());
		Statement thenPlaceholder = (Statement) rewrite.createMoveTarget(ifStatement.getThenStatement());
		
		Block elseBlock = ast.newBlock();
		for (int i = ifIndex + 1; i < statements.size(); i++) {
			Statement statement = (Statement) statements.get(i);
			elseBlock.statements().add(rewrite.createMoveTarget(statement));
		}