useEXIT_ERROR;impl_trivial_builtin_cmd!{/// Represents a `false` builtin command.
////// The `false` command has no effect and always exits unsuccessfully.
pubstructFalse;/// Creates a new `false` builtin command.
pubfnfalse_cmd();/// A future representing a fully spawned `false` builtin command.
pubstructSpawnedFalse;EXIT_ERROR}