default String renderAnnotations(Generator gen, M model) {
        return gen.onEach(model.getAnnotations())
            .collect(joinIfNotEmpty(
                annotationSeparator(), 
                "", 
                annotationSeparator()
            ));
    }
Renders all annotations in the specified model separated by new-line
characters.

@param gen    the generator
@param model  the model with the annotations
@return       the generated code
common-parent/codegen/src/main/java/com/speedment/common/codegen/internal/java/view/trait/HasAnnotationUsageView.java