public function getDoubleOptin()
    {
        $endpoint = $this->endpoint . '/double_optin';

        $response = $this->restClient->get( $endpoint );

        return $response['body'];
    }
public function getDoubleOptin()
    {
        $endpoint = $this->endpoint . '/double_optin';

        $response = $this->restClient->get( $endpoint );

        return $response['body'];
    }
public function getDoubleOptin ( ) { $ endpoint = $ this -> endpoint . '/double_optin' ; $ response = $ this -> restClient -> get ( $ endpoint ) ; return $ response [ 'body' ] ; }
Retrieve double opt in status

@return mixed
Retrieve double opt in status