pub fn is_empty(&self) -> bool {
        if self.username.is_empty() || self.api_key.is_empty() {
            return true;
        }

        false
    }
/// Checks if the login user and password is empty.
Checks if the login user and password is empty.
Checks if the login user and password is empty .
pub fn is_empty(&self) -> bool {
        if self.username.is_empty() || self.api_key.is_empty() {
            return true;
        }
        false
    }
pub fn is_empty ( & self ) -> bool { if self . username . is_empty ( ) || self . api_key . is_empty ( ) { return true ; } false }
Checks if the login user and password is empty.
Checks if the login user and password is empty .
&self
&self