code: @Deprecated
      public Proc launch(String[] cmd, String[] env, InputStream in, OutputStream out, FilePath workDir) throws IOException {
          return launch(launch().cmds(cmd).envs(env).stdin(in).stdout(out).pwd(workDir));
      }
docs: @param env
  Environment variable overrides.
  @param in
  null if there's no input.
  @param workDir
  null if the working directory could be anything.
  @param out
  stdout and stderr of the process will be sent to this stream.
  the stream won't be closed.
  
  @deprecated as of 1.311
  Use {@link #launch()} and its associated builder pattern