Plaintiff argues that the Improvement Act of 1911 is a special statute, complete in itself, and must be looked to for the procedure creating, extinguishing and foreclosing liens created under it for street improvements. (See Hellman v. Shoulters, 114 Cal. 136 [44 P. 915, 45 P. 1057]; Crummey v. Popp, 79 Cal.App. 230 [ 249 P. 29]; Walker v. Van Valkenburgh, 111 Cal.App. 538 [ 295 P. 1068].) This is generally true but cannot be applied literally to actions to foreclose liens created under it.