q[string]);
      toAdd: set[ProcOption] = {}; toRemove: set[ProcOption] = {};
      input = none(AsyncIoBase); output = none(AsyncIoBase);
      outputErr = none(AsyncIoBase); env = none(ProcEnv);
      envModifier = none(ProcEnv); workingDir = none(string);
      processName = none(string); logFn = none(LogFn);
      onErrorFn = none(OnErrorFn)): AsyncProc" href="_._/src/asyncproc/exports/asyncprocimpl.html#start%2CProcArgs%2Cseq%5Bstring%5D%2Cset%5BProcOption%5D%2Cset%5BProcOption%5D">asyncprocimpl: proc