AboutDialog.newFromAppdata

adw.about_dialog.AboutDialog newFromAppdata(string resourcePath, string releaseNotesVersion = null)

Creates a new adw.about_dialog.AboutDialog using AppStream metadata.

This automatically sets the following properties with the following AppStream values:

adw.about_dialog.AboutDialog.applicationIcon is set from the <id>
adw.about_dialog.AboutDialog.applicationName is set from the <name>
adw.about_dialog.AboutDialog.developerName is set from the <name> within <developer>
adw.about_dialog.AboutDialog.version_ is set from the version of the latest release
adw.about_dialog.AboutDialog.website is set from the <url type="homepage">
adw.about_dialog.AboutDialog.supportUrl is set from the <url type="help">
adw.about_dialog.AboutDialog.issueUrl is set from the <url type="bugtracker">
adw.about_dialog.AboutDialog.licenseType is set from the <project_license>. If the license type retrieved from AppStream is not listed in gtk.types.License, it will be set to GTK_LICENCE_CUSTOM.

If release_notes_version is not NULL, adw.about_dialog.AboutDialog.releaseNotesVersion is set to match it, while adw.about_dialog.AboutDialog.releaseNotes is set from the AppStream release description for that version.

`resourcePath`	The resource to use
`releaseNotesVersion`	The version to retrieve release notes for