faceTarget.java

void steerToDesiredFacing() {
        if (desiredFacing == null) {
            return;
        }
        float facing = getForwardFacing();
        // this contrain method keeps the angle between 180 and -180
        float diff = constrainAngle180(facing - desiredFacing);
        // steer within n degrees of desired facing, use this to control precision
        float angularThreshold = 1; 
        float angularVel = body.getAngularVelocity();
        // if we are turning too fast for the remaining turn distance, we slow down with this hack
        // this can prevent an over-steering behavior that causes wobble        
        if (Math.abs(angularVel / diff) > 0.1f) {
            body.setAngularVelocity(angularVel * 0.90f);
        }
        float torque = rotationForce;
        // turn one way
        if (diff >= angularThreshold) {
            body.applyTorque(-torque, true);
        // or turn the opposite way
        } else if (diff <= -angularThreshold) {
            body.applyTorque(torque, true);
        // if we are within 5 degrees of desired facing
        // we want to kill our turn gradually, but strong enough to stop
        } else if (diff < 5) {
            if (angularVel < 0.2) {
                // turning slow enough to be on target
                body.setAngularVelocity(0);
                removeDesiredFacing();
            } else {
                body.setAngularVelocity(angularVel * 0.5f);
            }
        }
    }

what does the method : removeDesiredFacing(); do?