// Create resource with targetPath using Resource constructor pattern
        Resource resourceWithTarget = new Resource();
        resourceWithTarget.setDirectory("src/main/custom");
        resourceWithTarget.setTargetPath("custom-output");

        // Convert through DefaultSourceRoot to ensure targetPath is preserved
        DefaultSourceRoot sourceRootFromResource =

        String src = source.getTargetPath();
        if (src != null) {
            if (sourceDominant || target.getTargetPath() == null) {
                target.setTargetPath(src);
                target.setLocation("targetPath", source.getLocation("targetPath"));
            }
        }
    }

    protected void mergeResource_Filtering(