void enum_header_formatter::register_inclusion_dependencies_provider(
    formattables::registrar& rg) const {
    rg.register_provider(boost::make_shared<provider>());
}
void class_implementation_formatter::register_inclusion_dependencies_provider(
    formattables::registrar& rg) const {
    rg.register_provider(boost::make_shared<provider>());
}
void forward_declarations_formatter::register_inclusion_dependencies_provider(
    formattables::registrar& rg) const {
    rg.register_provider(boost::make_shared<provider>());
}