?

    // Current code
    public static ErrorResponse getErrorResponse (Response<?> response) {
        final Gson gson = new Gson();

        try {
            String json = response.errorBody().string();
            return gson.fromJson(json, ErrorResponse.class);
        } catch (Exception e) {
            android.util.Log.e(TAG, "", e);
        }

        return null;
    }
    
    // Not sure this is better, so that caller need not perform null checking.
    public static ErrorResponse getErrorResponse (Response<?> response) {
        final Gson gson = new Gson();
        ErrorResponse errorResponse;
        
        try {
            String json = response.errorBody().string();
            errorResponse = gson.fromJson(json, ErrorResponse.class);
        } catch (Exception e) {
            android.util.Log.e(TAG, "", e);
        }

        if (errorResponse == null) {
            return new ErrorResponse(-1, "");
        }
    }