# File lib/rubygems/gem_commands.rb, line 657
    def initialize
      super('check', 'Check installed gems',
            {:verify => false, :alien => false})

      add_option('-v', '--verify FILE',
                 'Verify gem file against its internal',
                 'checksum') do |value, options|
        options[:verify] = value
      end

      add_option('-a', '--alien', "Report 'unmanaged' or rogue files in the",
                 "gem repository") do |value, options|
        options[:alien] = true
      end

      add_option('-t', '--test', "Run unit tests for gem") do |value, options|
        options[:test] = true
      end

      add_option('-V', '--version',
                 "Specify version for which to run unit tests") do |value, options|
        options[:version] = value
      end
    end