Nylas OAuth Error
public NylasOAuthError NylasOAuthError(@Json(name = "error" ) String error, @Json(name = "error_description" ) String errorDescription, @Json(name = "error_uri" ) String errorUri, @Json(name = "error_code" ) String errorCode, @Json(name = "request_id" ) String requestId, Integer statusCode, Map<String, List<String>> headers)