public Patch getPatch(Patch bank, int patchNum) {
public IPatch getPatch(IPatch bank, int patchNum) {
  public Patch getPatch(Patch bank, int patchNum) {    byte sysex[] = new byte[singleSize];    System.arraycopy(bank.sysex, patchNum * singleSize, sysex, 0, singleSize);    Patch p = new Patch(sysex, getDevice());    return p;  }