578A.9  Supplemental nature of chapter.
  This chapter does not impair the powers of the parties to a rental agreement to create rights, duties, or obligations that do not arise from this chapter. This chapter does not impair or impact the rights of parties to create liens by special contract or agreement, nor does it affect or impair other liens arising at common law or in equity, or by a statute of this state. The rights provided to an operator by this chapter are in addition to all other rights provided by law to a creditor against a debtor. 
2019 Acts, ch 50, §9