public virtual SWIGTYPE_p_btConstraintSolver getConstraintSolver()
{
IntPtr cPtr = BulletDynamicsPINVOKE.btSimpleDynamicsWorld_getConstraintSolver(swigCPtr);
SWIGTYPE_p_btConstraintSolver ret = (cPtr == IntPtr.Zero) ? null : new SWIGTYPE_p_btConstraintSolver(cPtr, false);
return ret;
}