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ROS 2 Composable Node Pass NodeHandler

I have an object that does some internal publishing and subscribing within my Component Class. In ROS 1 we passed the node_handler to the constructor so that class had access to things of that nature. However, I believe the concept of node_handler is obsolete in ROS 2. Is there something similar that I can pass into the constructor to have access to node functions, etc..? Are there other solutions?

Thanks!