fun oldVersionDownloadLink(minJosmVersion: Int, pluginVersion: String, downloadURL: URL): Unit
Add a link to an earlier release of the plugin, that is compatible with JOSM versions, with which the current version is no longer compatible.
Influenced MANIFEST.MF attribute: ([1-9][0-9]*)_Plugin-Url (Any attribute that matches this RegEx. The number in the beginning is determined by the parameter minJosmVersion.)
minJosmVersion - the minimum JOSM version with which the linked plugin is compatible
pluginVersion - the version number of the linked plugin
downloadURL - the URL where the linked plugin can be downloaded from