override public void OnTryStatement(TryStatement node)
{
_state.EnterTryBlock();
Visit(node.ProtectedBlock);
_state.EnterTryBlock();
Visit(node.ExceptionHandlers);
_state.EnterTryBlock();
Visit(node.EnsureBlock);
_state.LeaveTryBlock();
_state.LeaveTryBlock();
_state.LeaveTryBlock();
}