code: func (n *NodeApplyableOutput) EvalTree() EvalNode {
  	return &EvalSequence{
  		Nodes: []EvalNode{
  			&EvalOpFilter{
  				Ops: []walkOperation{walkRefresh, walkPlan, walkApply, walkValidate, walkDestroy, walkPlanDestroy},
  				Node: &EvalWriteOutput{
  					Addr:      n.Addr.OutputValue,
  					Sensitive: n.Config.Sensitive,
  					Expr:      n.Config.Expr,
  				},
  			},
  		},
  	}
  }
docs: // GraphNodeEvalable