public void setBroadphaseType(BroadphaseType broadphaseType) {
        this.broadphaseType = broadphaseType;
    }
Alter the broadphase type the physics space will use. Not allowed after
attaching the app state.

@param broadphaseType an enum value (not null, default=DBVT)
jme3-jbullet/src/main/java/com/jme3/bullet/BulletAppState.java