public void AddOnCollisionExit2dDelegate(OnCollisionExit2dDelegate del)
 {
     this.OnCollisionExit2dDelegates += del;
 }
 public void RemoveOnCollisionExit2dDelegate(OnCollisionExit2dDelegate del)
 {
     this.OnCollisionExit2dDelegates -= del;
 }
 public void RemoveOnCollisionExit2dDelegate(OnCollisionExit2dDelegate del)
 {
     this.OnCollisionExit2dDelegates -= del;
 }
 public void AddOnCollisionExit2dDelegate(OnCollisionExit2dDelegate del)
 {
     this.OnCollisionExit2dDelegates += del;
 }