Function check_permission 

pub fn check_permission(
    auth_token: &AuthToken,
    required_permission: &str,
) -> bool

Check whether auth_token carries the given permission.

Supports exact matches, a wildcard "*", and prefix wildcards such as "read:*" (matches "read:users", "read:settings", etc.).

Example

if check_permission(&token, "users:write") {
    // allow the operation
}