code: public static Map<String, Command> loadCommands(FileSystemContext fsContext) {
      return CommandUtils.loadCommands(FileSystemShell.class.getPackage().getName(),
          new Class[] {FileSystemContext.class}, new Object[] {fsContext});
    }
docs: Gets all {@link Command} instances in the same package as {@link FileSystemShell} and load them
  into a map. Provides a way to gain these commands information by their CommandName.
  
  @param fsContext the {@link FileSystemContext} instance to construct the command
  @return a mapping from command name to command instance