// Import classes:
import org.openapitools.client.ApiClient;
import org.openapitools.client.ApiException;
import org.openapitools.client.Configuration;
import org.openapitools.client.auth.*;
import org.openapitools.client.models.*;
import org.openapitools.client.api.AuthApi;

public class Example {
  public static void main(String[] args) {
    ApiClient defaultClient = Configuration.getDefaultApiClient();
    defaultClient.setBasePath("http://localhost/api/v1");
    
    // Configure HTTP basic authorization: basic_auth
    HttpBasicAuth basic_auth = (HttpBasicAuth) defaultClient.getAuthentication("basic_auth");
    basic_auth.setUsername("YOUR USERNAME");
    basic_auth.setPassword("YOUR PASSWORD");

    // Configure API key authorization: jwt_token
    ApiKeyAuth jwt_token = (ApiKeyAuth) defaultClient.getAuthentication("jwt_token");
    jwt_token.setApiKey("YOUR API KEY");
    // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
    //jwt_token.setApiKeyPrefix("Token");

    AuthApi apiInstance = new AuthApi(defaultClient);
    String groupId = "groupId_example"; // String | 
    String userId = "userId_example"; // String | 
    try {
      apiInstance.addGroupMembership(groupId, userId);
    } catch (ApiException e) {
      System.err.println("Exception when calling AuthApi#addGroupMembership");
      System.err.println("Status code: " + e.getCode());
      System.err.println("Reason: " + e.getResponseBody());
      System.err.println("Response headers: " + e.getResponseHeaders());
      e.printStackTrace();
    }
  }
}