docs: public static Point3D_F64 transfer_1_to_3(TrifocalTensor T , Point2D_F64 x1 , Point2D_F64 x3 ,
  											  @Nullable Point3D_F64 x2 )
  	{
  		if( x2 == null )
  			x2 = new Point3D_F64();
  
  		TrifocalTransfer transfer = new TrifocalTransfer();
  		transfer.setTrifocal(T);
  		transfer.transfer_1_to_2(x1.x,x1.y,x3.x,x3.y,x2);
  
  		return x2;
  	}