code: private String determineExecutable()
      {
          String emulator;
          if ( emulatorExecutable != null )
          {
              emulator = emulatorExecutable;
          }
          else
          {
              emulator = "emulator";
          }
          return emulator;
      }
docs: Get executable value for emulator from command line options or default to "emulator".
  
  @return