nativeDouble method
Introspect the native app's APLConfiguration (iOS) /
nz.co.electricbolt.appfiguratelibrary.Configuration (Android) subclass
for the float / double (Obj-C, Java), Float / Double
(Swift, Kotlin) with the propertyName specified.
Implementation
double nativeDouble(String propertyName) {
  Object? object = _cachedConfiguration[propertyName];
  if (object != null && object is double) {
    return object;
  }
  return 0.0;
}