src/Call/CallVerifier.php
public function responseDuration(): ?float
    {
        $responseTime = $this->call->responseTime();

        if (null === $responseTime) {
            return null;
        }

        return $responseTime - $this->call->time();
    }
public function responseDuration(): ?float
    {
        $responseTime = $this->call->responseTime();

        if (null === $responseTime) {
            return null;
        }

        return $responseTime - $this->call->time();
    }
public function responseDuration ( ) : ? float { $ responseTime = $ this -> call -> responseTime ( ) ; if ( null === $ responseTime ) { return null ; } return $ responseTime - $ this -> call -> time ( ) ; }
Get the call response duration.

@return float|null The call response duration in seconds, or null if the call has not yet responded.
Get the call response duration .