BEEmbeddedWebBrowserEngineVersion
A string version number for the alternative browser engine that your app embeds.
Discussion
If your app isn’t a browser app, but embeds an alternative browser engine, add this property to your app’s target in Xcode and set the value to the version of the alternative browser engine you use.
Supply a version that matches this regular expression: (v(ersion)?\s?)?\d+(\.\d+)*.
For more information, see Creating browser extensions in Xcode.