SpaceBefore( Backpassing( [ @18-19 Identifier { ident: "x", suffixed: 0, }, ], @23-32 ParensAround( Closure( [ @25-26 Identifier { ident: "y", suffixed: 0, }, ], @30-31 Var { module_name: "", ident: "y", suffixed: 0, }, ), ), @34-35 SpaceBefore( Var { module_name: "", ident: "x", suffixed: 0, }, [ Newline, Newline, ], ), ), [ LineComment( " leading comment", ), ], )