public function convertAvatar($projectId, $cropperWidth, $cropperOffsetX, $cropperOffsetY, $needsCropping)
    {
        return $this->apiClient->callEndpoint(
            sprintf('%s/%s/avatar', self::ENDPOINT, $projectId),
            array(
                "cropperWidth" => $cropperWidth,
                "cropperOffsetX" => $cropperOffsetX,
                "cropperOffsetY" => $cropperOffsetY,
                "needsCropping" => $needsCropping
            ),
            HttpMethod::REQUEST_POST
        );
    }