class Gem::Security::TrustDir

def each_certificate
  return enum_for __method__ unless block_given?
  glob = File.join @dir, "*.pem"
  Dir[glob].each do |certificate_file|
    certificate = load_certificate certificate_file
    yield certificate, certificate_file
  rescue OpenSSL::X509::CertificateError
    next # HACK: warn
  end
end