In some state court systems, "mandamus" has evolved into a general procedure for discretionary appeals from non-final trial court decisions. In some U.S. states, such as the courts of California, the writ is now called "mandate" instead of "mandamus", and may be issued by "any" level of the state court system to any lower court or to any government official. It is still common for Californians to bring "taxpayer actions" against public officials for wasting public funds through mismanagement of a government agency, where the relief sought is a writ of mandate compelling the official to stop wasting money and fulfill his duty to protect the public fisc. The writ of mandate is also used in California for interlocutory appeals. In this context, the party seeking the writ is treated on appeal like a plaintiff, the trial court becomes the defendant, and the opponent is designated as the "real party in interest".