def define_command(name = nil, &block)
      # Execute DSL
      dsl = Cri::CommandDSL.new
      dsl.name name unless name.nil?
      if [-1, 0].include? block.arity
        dsl.instance_eval(&block)
      else
        yield(dsl)
      end

      # Create command
      cmd = dsl.command
      add_command(cmd)
      cmd
    end
def define_command(name = nil, &block)
      # Execute DSL
      dsl = Cri::CommandDSL.new
      dsl.name name unless name.nil?
      if [-1, 0].include? block.arity
        dsl.instance_eval(&block)
      else
        yield(dsl)
      end

      # Create command
      cmd = dsl.command
      add_command(cmd)
      cmd
    end
Defines a new subcommand for the current command using the DSL.

 @param [String, nil] name The name of the subcommand, or nil if no name
   should be set (yet)

 @return [Cri::Command] The subcommand