# File lib/mime/types.rb, line 298 298: def signature? 299: case @content_type.downcase 300: when "application/pgp-keys", 301: "application/pgp", 302: "application/pgp-signature", 303: "application/pkcs10", 304: "application/pkcs7-mime", 305: "application/pkcs7-signature", 306: "text/vcard" 307: true 308: end 309: end