§ 1944. Hearing and final order upon non-appearance of adverse claimants. Upon the return day named in said notice the court shall proceed summarily to inquire into the truth of the matters set forth in the petition, and may appoint a referee for that purpose, and if there shall be no appearance by any person claiming any adverse interest to the petitioners in the real property described in the petition, the court may make a final order declaring that the title of the petitioner to such real property has been judicially established, which final order, together with the petition and order for and proof of publication of the notice, and the proofs taken before the court or referee shall be filed in the office of the clerk of the county in which the real property is situated, and such final order shall be evidence of the facts so declared to be established thereby in all courts and places, and thereafter no action or proceeding for the recovery of the real property described in said final order or any part thereof, or of any interest therein, shall be maintained by any person named as a defendant in the notice of pendency of action referred to in section 1941, or by any person or persons claiming under such defendant or either of them.