xecollider settarget and settargetpoint not included?

       //---
        // targetUnit is a unit to follow (or try to follow), notice that homing
        // options require an angleSpeed different to 0.0
        //
        public method  operator targetUnit takes nothing returns unit
            return this.homingTargetUnit
        endmethod
        public method  operator targetUnit= takes unit u returns nothing
            if(u==null) then
                set this.homingMode=0
            else
                set this.homingMode= .HOMING_UNIT
            endif
            set this.homingTargetUnit=u
        endmethod

        //----
        // targetPoint is a point to reach (or try to reach), notice that homing
        // options require an angleSpeed different to 0.0
        //
        public method setTargetPoint takes real x, real y returns nothing
            set this.homingMode= .HOMING_POINT
            set this.homingTargetX=x
            set this.homingTargetY=y
        endmethod
        public method setTargetPointLoc takes location loc returns nothing
            set this.homingMode= .HOMING_POINT
            set this.homingTargetX=GetLocationX(loc)
            set this.homingTargetY=GetLocationY(loc)
        endmethod

        //----
        // Call this in case you used targetUnit or TargetPoint so the missile
        // forgets the order to home that target.
        //
        public method forgetTarget takes nothing returns nothing
            set this.homingMode = 0
        endmethod