class Gem::Commands::CertCommand

def execute
  options[:add].each do |certificate|
    add_certificate certificate
  end
  options[:remove].each do |filter|
    remove_certificates_matching filter
  end
  options[:list].each do |filter|
    list_certificates_matching filter
  end
  options[:build].each do |email|
    build email
  end
  if options[:resign]
    re_sign_cert(
      options[:issuer_cert],
      options[:issuer_cert_file],
      options[:key]
    )
  end
  sign_certificates unless options[:sign].empty?
end