PrefixOp ( op: Ident , od: Tree )

[+] val od : Tree

[+] val op : Ident

[+] def _1 : T1

[+] def _2 : T2

[+] def copy ( op: Ident , od: Tree ) : PrefixOp

[+] def copy$default$1 : Ident

[+] def copy$default$2 : Tree