pub fn extension_is_valid(path: &str) -> bool {
let path = path.to_lowercase();
is_yaml(&path) || is_json(&path)
}
pub fn is_yaml(path: &str) -> bool {
path.ends_with(".yaml") || path.ends_with(".yml")
}
pub fn is_json(path: &str) -> bool {
path.ends_with(".json")
}