public void AddOnCollisionStay2dDelegate(OnCollisionStay2dDelegate del)
 {
     this.OnCollisionStay2dDelegates += del;
 }
 public void RemoveOnCollisionStay2dDelegate(OnCollisionStay2dDelegate del)
 {
     this.OnCollisionStay2dDelegates -= del;
 }
 public void RemoveOnCollisionStay2dDelegate(OnCollisionStay2dDelegate del)
 {
     this.OnCollisionStay2dDelegates -= del;
 }
 public void AddOnCollisionStay2dDelegate(OnCollisionStay2dDelegate del)
 {
     this.OnCollisionStay2dDelegates += del;
 }