These functions do not aim at being called as is by
users, but to be passed as an argument to the add_js_handler()
function.
js_handler_template(path, name = "fun", code = " ")
js_template(path, code = " ")
css_template(path, code = " ")
sass_template(path, code = " ")
empty_template(path, code = " ")
Used for side effect