Gem::Security::TrustDir#each_certificate

# File tmp/rubies/ruby-3.4.1/lib/rubygems/security/trust_dir.rb, line 42
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