public okhttp3.Call getCKMSMasterDataCall(String clientKey, String product, String field,
            final ApiCallback _callback) throws ApiException
    {
        Object localVarPostBody = null;

        // create path and map variables
        String localVarPath = "/keys/data";

        List<Pair> localVarQueryParams = new ArrayList<Pair>();
        List<Pair> localVarCollectionQueryParams = new ArrayList<Pair>();
        if (field != null)
        {
            localVarQueryParams.addAll(localVarApiClient.parameterToPair("field", field));
        }

        Map<String, String> localVarHeaderParams = new HashMap<String, String>();
        if (clientKey != null)
        {
            localVarHeaderParams.put("client_key", localVarApiClient.parameterToString(clientKey));
        }

        if (product != null)
        {
            localVarHeaderParams.put("product", localVarApiClient.parameterToString(product));
        }

        Map<String, String> localVarCookieParams = new HashMap<String, String>();
        Map<String, Object> localVarFormParams = new HashMap<String, Object>();
        final String[] localVarAccepts = { "application/json" };
        final String localVarAccept = localVarApiClient.selectHeaderAccept(localVarAccepts);
        if (localVarAccept != null)
        {
            localVarHeaderParams.put("Accept", localVarAccept);
        }

        final String[] localVarContentTypes = {

        };
        final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
        localVarHeaderParams.put("Content-Type", localVarContentType);

        String[] localVarAuthNames = new String[] {};
        return localVarApiClient.buildCall(localVarPath, "GET", localVarQueryParams, localVarCollectionQueryParams,
                localVarPostBody, localVarHeaderParams, localVarCookieParams, localVarFormParams, localVarAuthNames,
                _callback);
    }

    @SuppressWarnings("rawtypes")
    private okhttp3.Call getCKMSMasterDataValidateBeforeCall(String clientKey, String product, String field,
            final ApiCallback _callback) throws ApiException
    {

        // verify the required parameter 'clientKey' is set
        if (clientKey == null)
        {
            throw new ApiException("Missing the required parameter 'clientKey' when calling getCKMSMasterData(Async)");
        }


        okhttp3.Call localVarCall = getCKMSMasterDataCall(clientKey, product, field, _callback);
        return localVarCall;

    }

    /**
     * Get information about all option fields required in the UI get CKMS master data
     *
     * @param clientKey
     *         &lt;code&gt;client_key&lt;/code&gt; of the caller service issued by Orbipay at the time of client
     *         onboarding. (required)
     * @param requestor
     *         The identifier for the requestor of the API. (required)
     * @param requestorType
     *         The identifier for the requestor type of the API. (required)
     * @param timestamp
     *         The datetime when the API is invoked in the ISO8601 format with the timezone offset. (required)
     * @param product
     *         The product identifier corresponding to the API. (optional)
     * @param idempotentRequestKey
     *         &lt;code&gt;idempotent_request_key&lt;/code&gt; for the API, used to identify the deuplicate requests
     *         with in a time period. (optional)
     * @param field
     *         specific field of which data has to be retrieved(optional) (optional)
     * @return KeyDataResponse
     * @throws ApiException
     *         If fail to call the API, e.g. server error or cannot deserialize the response body
     * @http.response.details <table summary="Response Details" border="1">
     *         <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
     *         <tr><td> 200 </td><td> OK </td><td>  -  </td></tr>
     *         <tr><td> 400 </td><td> Bad Request </td><td>  -  </td></tr>
     *         <tr><td> 401 </td><td> Unauthorized </td><td>  -  </td></tr>
     *         <tr><td> 500 </td><td> Internal Server Error </td><td>  -  </td></tr>
     *         <tr><td> 0 </td><td> System Error </td><td>  -  </td></tr>
     *         </table>
     */
    public KeyDataResponse getCKMSMasterData(String clientKey, String product, String field) throws ApiException
    {
        ApiResponse<KeyDataResponse> localVarResp = getCKMSMasterDataWithHttpInfo(clientKey, product, field);
        return localVarResp.getData();
    }

    /**
     * Get information about all option fields required in the UI get CKMS master data
     *
     * @param clientKey
     *         &lt;code&gt;client_key&lt;/code&gt; of the caller service issued by Orbipay at the time of client
     *         onboarding. (required)
     * @param requestor
     *         The identifier for the requestor of the API. (required)
     * @param requestorType
     *         The identifier for the requestor type of the API. (required)
     * @param timestamp
     *         The datetime when the API is invoked in the ISO8601 format with the timezone offset. (required)
     * @param product
     *         The product identifier corresponding to the API. (optional)
     * @param idempotentRequestKey
     *         &lt;code&gt;idempotent_request_key&lt;/code&gt; for the API, used to identify the deuplicate requests
     *         with in a time period. (optional)
     * @param field
     *         specific field of which data has to be retrieved(optional) (optional)
     * @return ApiResponse&lt;KeyDataResponse&gt;
     * @throws ApiException
     *         If fail to call the API, e.g. server error or cannot deserialize the response body
     * @http.response.details <table summary="Response Details" border="1">
     *         <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
     *         <tr><td> 200 </td><td> OK </td><td>  -  </td></tr>
     *         <tr><td> 400 </td><td> Bad Request </td><td>  -  </td></tr>
     *         <tr><td> 401 </td><td> Unauthorized </td><td>  -  </td></tr>
     *         <tr><td> 500 </td><td> Internal Server Error </td><td>  -  </td></tr>
     *         <tr><td> 0 </td><td> System Error </td><td>  -  </td></tr>
     *         </table>
     */
    public ApiResponse<KeyDataResponse> getCKMSMasterDataWithHttpInfo(String clientKey, String product, String field)
            throws ApiException
    {
        okhttp3.Call localVarCall = getCKMSMasterDataValidateBeforeCall(clientKey, product, field, null);
        Type localVarReturnType = new TypeToken<KeyDataResponse>()
        {
        }.getType();
        return localVarApiClient.execute(localVarCall, localVarReturnType);
    }

    /**
     * Get information about all option fields required in the UI (asynchronously) get CKMS master data
     *
     * @param clientKey
     *         &lt;code&gt;client_key&lt;/code&gt; of the caller service issued by Orbipay at the time of client
     *         onboarding. (required)
     * @param requestor
     *         The identifier for the requestor of the API. (required)
     * @param requestorType
     *         The identifier for the requestor type of the API. (required)
     * @param timestamp
     *         The datetime when the API is invoked in the ISO8601 format with the timezone offset. (required)
     * @param product
     *         The product identifier corresponding to the API. (optional)
     * @param idempotentRequestKey
     *         &lt;code&gt;idempotent_request_key&lt;/code&gt; for the API, used to identify the deuplicate requests
     *         with in a time period. (optional)
     * @param field
     *         specific field of which data has to be retrieved(optional) (optional)
     * @param _callback
     *         The callback to be executed when the API call finishes
     * @return The request call
     * @throws ApiException
     *         If fail to process the API call, e.g. serializing the request body object
     * @http.response.details <table summary="Response Details" border="1">
     *         <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
     *         <tr><td> 200 </td><td> OK </td><td>  -  </td></tr>
     *         <tr><td> 400 </td><td> Bad Request </td><td>  -  </td></tr>
     *         <tr><td> 401 </td><td> Unauthorized </td><td>  -  </td></tr>
     *         <tr><td> 500 </td><td> Internal Server Error </td><td>  -  </td></tr>
     *         <tr><td> 0 </td><td> System Error </td><td>  -  </td></tr>
     *         </table>
     */
    public okhttp3.Call getCKMSMasterDataAsync(String clientKey, String product, String field,
            final ApiCallback<KeyDataResponse> _callback) throws ApiException
    {

        okhttp3.Call localVarCall = getCKMSMasterDataValidateBeforeCall(clientKey, product, field, _callback);
        Type localVarReturnType = new TypeToken<KeyDataResponse>()
        {
        }.getType();
        localVarApiClient.executeAsync(localVarCall, localVarReturnType, _callback);
        return localVarCall;
    }