scala.tools.nsc.ast.NodePrinters
(printAST: StringAdd).self
(printAST: StringFormat).self
(printAST: ArrowAssoc[PrintAST]).x
(Since version 2.10.0) Use leftOfArrow
instead
(printAST: Ensuring[PrintAST]).x
(Since version 2.10.0) Use resultOfEnsuring
instead