public static void unregisterCustomDefaultsSource( String packageName, ClassLoader classLoader ) {
		if( customDefaultsSources == null )
			return;

		int size = customDefaultsSources.size();
		for( int i = 0; i < size - 1; i++ ) {
			Object source = customDefaultsSources.get( i );
			if( packageName.equals( source ) && customDefaultsSources.get( i + 1 ) == classLoader ) {
				customDefaultsSources.remove( i + 1 );
				customDefaultsSources.remove( i );
				break;
			}
		}
	}
Registers a package where FlatLaf searches for properties files with custom UI defaults.
<p>
See {@link #registerCustomDefaultsSource(String)} for details.

@param packageName a package name (e.g. "com.myapp.resources")
@param classLoader a class loader used to find resources, or {@code null}
flatlaf-core/src/main/java/com/formdev/flatlaf/FlatLaf.java