Function check 

pub async fn check<T, E>(request: T) -> Result<Response>
where
    Request: TryFrom<T, Error = E>,
    ErrorKind: From<E>,

A shorthand function to check a single URI.

This provides the simplest link check utility without having to create a Client. For more complex scenarios, see documentation of ClientBuilder instead.

Errors

Returns an Err if:

• The request client cannot be built (see ClientBuilder::client for failure cases).
• The request cannot be checked (see Client::check for failure cases).