* Share database connections.
* Enforce security, authentication, role requirements, etc.
* And many other things...

All these, while minimizing code repetition.

## First Steps { #first-steps }

Let's see a very simple example. It will be so simple that it is not very useful, for now.

But this way we can focus on how the **Dependency Injection** system works.

                reverse = false
                stopBuildOnFailure = true
            }
        }
    }

    if (os !in listOf(Os.WINDOWS, Os.MACOS)) {
        steps {
            exec {
                name = "EC2_BUILD_CUSTOMIZATIONS"
                executionMode = BuildStep.ExecutionMode.ALWAYS
                path = ".teamcity/scripts/configure_build_env_on_ec2.sh"

        mockBhv.setTestData(testData);

        relatedContentHelper.update();
        // Give a moment for async execution
        try {
            Thread.sleep(100);
        } catch (InterruptedException e) {
            // ignore
        }

        results = relatedContentHelper.getRelatedContents("test");
        assertEquals("Updated Content", results[0]);
    }

        directoryLeaseManager.updateDirectoryCache(directoryPath, files);

        assertTrue(entry.isComplete());
        assertFalse(entry.needsRefresh());

        // Wait for expiration
        Thread.sleep(100);

        assertTrue(entry.isExpired());
        assertTrue(entry.needsRefresh());

        // After expiration, cache should be treated as invalid by manager

                setupMinioClient(bucketName, endpoint);
                break;
            } catch (final Exception e) {
                logger.warn("[{}] {}", i + i, e.getMessage());
            }
            ThreadUtil.sleep(1000L);
        }
    }

    private void setupMinioClient(String bucketName, String endpoint) throws Exception {

  }

  @Override
  protected Collection<Method> suppressForConcurrentHashMap() {
    /*
     * The entrySet() of ConcurrentHashMap, unlike that of other Map
     * implementations, supports add() under JDK8. This seems problematic, but I
     * didn't see that discussed in the review, which included many other
     * changes: https://mail.openjdk.org/pipermail/core-libs-dev/2013-May/thread.html#17367
     *

            reader.addSort(SortBuilders.scoreSort());
            return reader;
        }, docPerReq, () -> {
            systemHelper.calibrateCpuLoad();
            ThreadUtil.sleep(interval);
        }).then(response -> {
            refresh();
            success.accept(true);
        }).error(t -> error.accept(t));
    }

    /**
     * Purges old suggest data from documents.

  @SuppressWarnings({"GoodTime-ApiWithNumericTimeUnit", "GoodTime-DecomposeToPrimitive"})
  @IgnoreJRERequirement
  static long toNanosSaturated(Duration duration) {
    // Using a try/catch seems lazy, but the catch block will rarely get invoked (except for
    // durations longer than approximately +/- 292 years).
    try {
      return duration.toNanos();
    } catch (ArithmeticException tooBig) {

    runs-on: [self-hosted, linux, ARM64]
    strategy:
      matrix:
        pyver: ['3.10']
    steps:
      - name: Stop old running containers (if any)
        shell: bash
        run: |
          running_containers=$(docker ps -q) && \
          if [[ $running_containers == "" ]]; then

permissions:
  contents: read

jobs:
  replication-test:
    name: Advanced Tests with Go ${{ matrix.go-version }}
    runs-on: ubuntu-latest

    strategy:
      matrix:
        go-version: [1.24.x]

    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-go@v5
        with:
          go-version: ${{ matrix.go-version }}
          check-latest: true
      - name: Test Decom
        run: |