A traffic control application programming interface for abstracting the use of traffic control components to client applications to provide quality of service. The systems and methods of the present invention comprise utilizing an arm that is extendable and retractable into and out of a position for accessing an opening in a slag door. A reference injection amount calculating portion 31 calculates a reference injection amount GUREA\u2014BS based on a parameter correlating to an operating state of an engine. The alternate source of control may be one or more of an autopilot, a flight control system and an off-aircraft human pilot. A food supporting tray with a plurality of steam holes formed therethrough is placed in the body of the steaming container such that the food to be cooked is placed on the food supporting tray.