public SWIGTYPE_p_btSimulationIslandManager getSimulationIslandManager()
{
IntPtr cPtr = BulletDynamicsPINVOKE.btDiscreteDynamicsWorld_getSimulationIslandManager__SWIG_0(swigCPtr);
SWIGTYPE_p_btSimulationIslandManager ret = (cPtr == IntPtr.Zero) ? null : new SWIGTYPE_p_btSimulationIslandManager(cPtr, false);
return ret;
}