import junit.framework.TestCase;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Unit tests for {@link Callables}.
 *
 * @author Isaac Shum
 */
@GwtCompatible(emulated = true)
public class CallablesTest extends TestCase {

  @J2ktIncompatible // TODO(b/324550390): Enable
  public void testReturning() throws Exception {
    assertNull(Callables.returning(null).call());

## Configuring Site Replication

- Configure an alias in `mc` for each of the sites. For example if you have three MinIO sites, you may run:

```sh
mc alias set minio1 https://minio1.example.com:9000 adminuser adminpassword
mc alias set minio2 https://minio2.example.com:9000 adminuser adminpassword

    Otherwise, TeamCity complains "Can't find the previous revision, please commit current settings first".
  - If anything bad happens, feel free to delete the project you created and retry (you may need to apply `Synchronization disabled` before deleting it).  
    
If no errors, your new pipeline will be displayed on TeamCity web UI:

```
Gradle
|------ Master

#!/bin/bash

if [ -n "$TEST_DEBUG" ]; then
	set -x
fi

pkill minio
rm -rf /tmp/xl

if [ ! -f ./mc ]; then
	wget --quiet -O mc https://dl.minio.io/client/mc/release/linux-amd64/mc &&
		chmod +x mc
fi

export CI=true
export MINIO_KMS_AUTO_ENCRYPTION=on
export MINIO_KMS_SECRET_KEY=my-minio-key:OSMM+vkKUTCvQs9YL/CVMIMt43HFhkUpqJxTmGl6rYw=

(minio server http://localhost:9000/tmp/xl/{1...10}/disk{0...1} 2>&1 >/dev/null) &
pid=$!

            try {
                updateFileIfChanged();
            } catch (Exception e) {
                logError("Error updating file", e);
            }
        }

        return true;
    }

    private String getFullClassName(TypeElement typeElement) {
        StringBuilder className = new StringBuilder(typeElement.getSimpleName());
        Element enclosingElement = typeElement.getEnclosingElement();

                                    "$ref": "#/components/schemas/Body_create_file_files__post"
                                }
                            }
                        },
                        "required": True,
                    },
                }
            }
        },
        "components": {
            "schemas": {
                "Body_create_file_files__post": {

}

// Describes the state of the storageVersion at a certain point.
message StorageVersionCondition {
  // Type of the condition.
  // +required
  optional string type = 1;

  // Status of the condition, one of True, False, Unknown.
  // +required
  optional string status = 2;

  // If set, this represents the .metadata.generation that the condition was set based upon.
  // +optional
  optional int64 observedGeneration = 3;

            prs.addAll(prPage)
            if (prPage.size < PAGE_SIZE) {
                break
            }
        }
        return prs
            .filter { it.milestone?.title?.startsWith(milestone.get()) == true }
            .map { it.user.login }
            .toSet()
            .map { getUserInfo(it) }
            .toSet()
    }

    private
    fun <T> invokeGitHubApi(uri: String, klass: Class<T>): T {

            throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToCreateInstance(GLOBAL));
            return null;
        });
        return asJson(new ApiUpdateResponse().id(boostDoc.getId()).created(true).status(Status.OK).result());
    }

    // POST /api/admin/boostdoc/setting
    @Execute
    public JsonResponse<ApiResult> post$setting(final EditBody body) {
        validateApi(body, messages -> {});

            throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToCreateCrudTable(GLOBAL, buildThrowableMessage(e)));
        }
        return asJson(new ApiResult.ApiUpdateResponse().id(entity.getId()).created(true).status(ApiResult.Status.OK).result());
    }

    // POST /api/admin/group/setting
    @Execute
    public JsonResponse<ApiResult> post$setting(final EditBody body) {
        validateApi(body, messages -> {});