상속: btGeneric6DofConstraint
 internal static HandleRef getCPtr(btGeneric6DofSpringConstraint obj)
 {
     return((obj == null) ? new HandleRef(null, IntPtr.Zero) : obj.swigCPtr);
 }
 internal static HandleRef getCPtr(btGeneric6DofSpringConstraint obj)
 {
     return (obj == null) ? new HandleRef(null, IntPtr.Zero) : obj.swigCPtr;
 }