Function suggestions::provide_a_suggestion

pub fn provide_a_suggestion<I, T>(
    target: &str, 
    possible_values: I
) -> Option<String> where
    T: AsRef<str>,
    I: IntoIterator<Item = T>, 

Suggest a string that most is similar to target, but is actually present in the possible_values.

Returns None if there is nothing in possible_values that is reasonably similar.

See also provide_suggestions to consider multiple possible suggestions (recommended).

If there are multiple ,possible