B4J Question jGoogleMaps Lib V2

I am working on a project with Google Maps V2. The code is as Erel's example here Google Maps V2

I am using the recommended OpenJDK 19.0.2 + OpenJFX 17.0.6 and have included the #PackagerProperty code.

WARNING: package com.sun.javafx.embed.swing.oldimpl not in javafx.swing

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Is this a problem?