### Question:
GeneralLedgerAccountApi { public GetGLAccountsResponse retreiveAccount(Long glAccountId, Boolean fetchRunningBalance) throws ApiException { ApiResponse<GetGLAccountsResponse> resp = retreiveAccountWithHttpInfo(glAccountId, fetchRunningBalance); return resp.getData(); } GeneralLedgerAccountApi();  GeneralLedgerAccountApi(ApiClient apiClient); ApiClient getApiClient(); void setApiClient(ApiClient apiClient); com.squareup.okhttp.Call createGLAccountCall(PostGLAccountsRequest body, final ProgressResponseBody.ProgressListener progressListener, final ProgressRequestBody.ProgressRequestListener progressRequestListener); PostGLAccountsResponse createGLAccount(PostGLAccountsRequest body); ApiResponse<PostGLAccountsResponse> createGLAccountWithHttpInfo(PostGLAccountsRequest body); com.squareup.okhttp.Call createGLAccountAsync(PostGLAccountsRequest body, final ApiCallback<PostGLAccountsResponse> callback); com.squareup.okhttp.Call deleteGLAccountCall(Long glAccountId, final ProgressResponseBody.ProgressListener progressListener, final ProgressRequestBody.ProgressRequestListener progressRequestListener); DeleteGLAccountsRequest deleteGLAccount(Long glAccountId); ApiResponse<DeleteGLAccountsRequest> deleteGLAccountWithHttpInfo(Long glAccountId); com.squareup.okhttp.Call deleteGLAccountAsync(Long glAccountId, final ApiCallback<DeleteGLAccountsRequest> callback); com.squareup.okhttp.Call retreiveAccountCall(Long glAccountId, Boolean fetchRunningBalance, final ProgressResponseBody.ProgressListener progressListener, final ProgressRequestBody.ProgressRequestListener progressRequestListener); GetGLAccountsResponse retreiveAccount(Long glAccountId, Boolean fetchRunningBalance); ApiResponse<GetGLAccountsResponse> retreiveAccountWithHttpInfo(Long glAccountId, Boolean fetchRunningBalance); com.squareup.okhttp.Call retreiveAccountAsync(Long glAccountId, Boolean fetchRunningBalance, final ApiCallback<GetGLAccountsResponse> callback); com.squareup.okhttp.Call retrieveAllAccountsCall(Integer type, String searchParam, Integer usage, Boolean manualEntriesAllowed, Boolean disabled, Boolean fetchRunningBalance, final ProgressResponseBody.ProgressListener progressListener, final ProgressRequestBody.ProgressRequestListener progressRequestListener); List<GetGLAccountsResponse> retrieveAllAccounts(Integer type, String searchParam, Integer usage, Boolean manualEntriesAllowed, Boolean disabled, Boolean fetchRunningBalance); ApiResponse<List<GetGLAccountsResponse>> retrieveAllAccountsWithHttpInfo(Integer type, String searchParam, Integer usage, Boolean manualEntriesAllowed, Boolean disabled, Boolean fetchRunningBalance); com.squareup.okhttp.Call retrieveAllAccountsAsync(Integer type, String searchParam, Integer usage, Boolean manualEntriesAllowed, Boolean disabled, Boolean fetchRunningBalance, final ApiCallback<List<GetGLAccountsResponse>> callback); com.squareup.okhttp.Call retrieveNewAccountDetailsCall(Integer type, final ProgressResponseBody.ProgressListener progressListener, final ProgressRequestBody.ProgressRequestListener progressRequestListener); GetGLAccountsTemplateResponse retrieveNewAccountDetails(Integer type); ApiResponse<GetGLAccountsTemplateResponse> retrieveNewAccountDetailsWithHttpInfo(Integer type); com.squareup.okhttp.Call retrieveNewAccountDetailsAsync(Integer type, final ApiCallback<GetGLAccountsTemplateResponse> callback); com.squareup.okhttp.Call updateGLAccountCall(Long glAccountId, PutGLAccountsRequest body, final ProgressResponseBody.ProgressListener progressListener, final ProgressRequestBody.ProgressRequestListener progressRequestListener); PutGLAccountsResponse updateGLAccount(Long glAccountId, PutGLAccountsRequest body); ApiResponse<PutGLAccountsResponse> updateGLAccountWithHttpInfo(Long glAccountId, PutGLAccountsRequest body); com.squareup.okhttp.Call updateGLAccountAsync(Long glAccountId, PutGLAccountsRequest body, final ApiCallback<PutGLAccountsResponse> callback);  }### Answer:
@Test public void retreiveAccountTest() throws ApiException { Long glAccountId = null; Boolean fetchRunningBalance = null; GetGLAccountsResponse response = api.retreiveAccount(glAccountId, fetchRunningBalance); }