private String getPropertyOrWildcard( String key ) {
		String value = getProperty( key );
		if( value != null )
			return value;

		if( !isKeyAllowedForWildcard( key ) )
			return null;

		int lastDotIndex = key.lastIndexOf( '.' );
		if( lastDotIndex < 0 )
			return null;

		String wildcardKey = "*.".concat( key.substring( lastDotIndex + 1 ) );
		return getProperty( wildcardKey );
	}
Supports parsing content of text area in FlatLaf properties syntax.

@author Karl Tauber
flatlaf-theme-editor/src/main/java/com/formdev/flatlaf/themeeditor/FlatThemePropertiesSupport.java