public PipesPipeline<S, Row> select(final Collection<String> stepNames, final PipeFunction... columnFunctions) {
return this.add(new SelectPipe(stepNames, FluentUtility.getAsPipes(this), FluentUtility.prepareFunctions(this.asMap, columnFunctions)));
}
public PipesPipeline<S, Row> select(final PipeFunction... columnFunctions) {
return this.add(new SelectPipe(null, FluentUtility.getAsPipes(this), FluentUtility.prepareFunctions(this.asMap, columnFunctions)));
}