src/Client.php
private function getHTTPClient()
    {
        if ($this->httpClient instanceof ClientInterface === false) {
            $this->httpClient = new HTTPClient();
        }

        return $this->httpClient;
    }
private function getHTTPClient()
    {
        if ($this->httpClient instanceof ClientInterface === false) {
            $this->httpClient = new HTTPClient();
        }

        return $this->httpClient;
    }
private function getHTTPClient ( ) { if ( $ this -> httpClient instanceof ClientInterface === false ) { $ this -> httpClient = new HTTPClient ( ) ; } return $ this -> httpClient ; }
Returns a ClientInterface instance.

@return ClientInterface
Returns a ClientInterface instance .