What does the following method do$?$

private void Order$($Node node$)$

$\{$

if $($node $==$ null$)$

return;

else $\{$

Order$($node$.$left$)$;

Order$($node$.$right$)$;

System.out.print$($node$.$data $+"")$;

$\}$

$\}$

postOrder Traverse

getLeft Subtree

inOrder Traverse

preOrder Traverse