containsResult == expectedResult
        1 * onAccess.accept(key, reportedValue)
        0 * onAccess._

        when:
        def containsAllResult = getMapUnderTestToRead().stringPropertyNames().containsAll(Collections.singleton(key))

        then:
        containsAllResult == expectedResult
        1 * onAccess.accept(key, reportedValue)
        0 * onAccess._

        where:

    private final BiConsumer<? super String, ? super String> onAccess;

    public AccessTrackingEnvMap(BiConsumer<String, String> onAccess) {
        this(System.getenv(), onAccess);
    }

    @VisibleForTesting
    public AccessTrackingEnvMap(Map<String, String> delegate, BiConsumer<? super String, ? super String> onAccess) {
        this.delegate = delegate;
        this.onAccess = onAccess;
    }

    @Override

        return new AccessTrackingEnvMap(new StubEnvMap(), onAccess)
    }

    def "access to non-string element with containsKey throws"() {
        when:
        getMapUnderTestToRead().containsKey(Integer.valueOf(5))

        then:
        thrown(RuntimeException)
        0 * onAccess._
    }

    private class StubEnvMap extends ForwardingMap<String, String> {
        @Override

success.upload_design_file=Uploaded {0}.
success.update_design_jsp_file=Updated {0}.
success.create_crawling_config_at_wizard=Created a crawling config ({0}).
success.failure_url_delete_all=Deleted failure urls.
success.delete_file=Deleted {0} file.
success.job_started=Started job {0}.
success.job_stopped=Stopped job {0}.
success.upload_synonym_file=Uploaded Synonym file.

success.upload_design_file=Uploaded {0}.
success.update_design_jsp_file=Updated {0}.
success.create_crawling_config_at_wizard=Created a crawling config ({0}).
success.failure_url_delete_all=Deleted failure urls.
success.delete_file=Deleted {0} file.
success.job_started=Started job {0}.
success.job_stopped=Stopped job {0}.
success.upload_synonym_file=Uploaded Synonym file.

            "-Dorg.gradle.configuration-cache.internal.task-execution-access-pre-stable=true",
        ])

        when:
        def result = runner.build()

        then:
        result.task(":distributions-full:binDistributionZip").outcome == TaskOutcome.SUCCESS
        result.task(":distributions-full:binInstallation").outcome == TaskOutcome.SUCCESS
    }

    def "can install Gradle distribution over itself"() {

./mc cp -r --quiet /usr/bin site1/testbucket/

sleep 5

./s3-check-md5 -h

failed_count_site1=$(./s3-check-md5 -versions -access-key minioadmin -secret-key minioadmin -endpoint http://site1-nginx:9001 -bucket testbucket 2>&1 | grep FAILED | wc -l)
failed_count_site2=$(./s3-check-md5 -versions -access-key minioadmin -secret-key minioadmin -endpoint http://site2-nginx:9002 -bucket testbucket 2>&1 | grep FAILED | wc -l)

        !result
        1 * onAccess.accept('missing', null)
        0 * onAccess._
    }

    def "aggregating method #methodName reports all map contents as inputs"() {
        when:
        operation.accept(getMapUnderTestToRead())

        then:
        (1.._) * onAccess.accept('existing', 'existingValue')
        (1.._) * onAccess.accept('other', 'otherValue')
        0 * onAccess._

        where:

        boolean result = delegate.contains(o);
        listener.onAccess(o);
        return result;
    }

    @Override
    public boolean containsAll(@Nonnull Collection<?> collection) {
        boolean result = delegate.containsAll(collection);
        for (Object o : collection) {
            listener.onAccess(o);
        }
        return result;
    }

    @Override

## MinIO Docker Tips

### MinIO Custom Access and Secret Keys

To override MinIO's auto-generated keys, you may pass secret and access keys explicitly as environment variables. MinIO server also allows regular strings as access and secret keys.

#### GNU/Linux and macOS (custom access and secret keys)

```sh
docker run \
  -p 9000:9000 \
  -p 9001:9001 \
  --name minio1 \