code: public void markActive(@NonNull String nodeName, boolean active) {
          ensureNodeStateExists(nodeName);
  
          states.get(nodeName).setActive(active);
      }
docs: This method allows to set specified node active or inactive.
  PLEASE NOTE: All nodes using this node as input, will be considered inactive, if this node is set to be inactive.
  
  @param nodeName
  @param active