Nothing contained in sections 648.15 and 648.16 shall prevent a party from suing for trespass or from testing the right of property in any other manner. [C51, §2371; R60, §3961; C73, §3620; C97, §4216; C24, 27, 31, 35, 39, § 12278; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §648.17 ]