@Nullable
  private static ControlFlow getControlFlow(final PsiElement context) {
    try {
      return ControlFlowFactory.getInstance(context.getProject())
        .getControlFlow(context, LocalsOrMyInstanceFieldsControlFlowPolicy.getInstance());
    }
    catch (AnalysisCanceledException e) {
      return null;
    }
  }
@Nullable
  private static ControlFlow getControlFlow(final PsiElement context)