public void sendOtp

public void sendOtp(String endpoint, HashMap<String, String> params, ApiRequest.ApiCallback callback) {
        apiRequest.post(endpoint, params, null, new ApiRequest.ApiCallback() {
            @Override
            public void onSuccess(String response) {
                try {
                    JSONObject obj = new JSONObject(response.trim());
                    callback.onSuccess(obj.toString());
                } catch (JSONException e) {
                    callback.onError("Response parsing error: " + e.getMessage());
                }
            }

            @Override
            public void onError(String error) {
                callback.onError(error);
            }
        });
    }