List<ICompletionContext> contexts = new ArrayList<ICompletionContext>();
contexts.add(new AbstractTwigCompletionContext());
contexts.add(new KeywordContext());
contexts.add(new FilterContext());
contexts.add(new VariableFieldContext());
contexts.add(new TemplateVariablesContext());
contexts.add(new QuotesContext());
contexts.add(new FunctionContext());
contexts.add(new TagContext());
contexts.add(new TestContext());