t.Parallel()
	for _, testCase := range testCases {
		testCase := testCase
		t.Run(testCase.name, func(t *testing.T) {
			update, err := testCase.meta.validate(testCase.pools)
			if testCase.expectedErr {
				t.Log(err)
			}
			if err != nil && !testCase.expectedErr {
				t.Errorf("Expected success, but found %s", err)
			}
			if err == nil && testCase.expectedErr {
				t.Error("Expected error, but got `nil`")
			}

         * @param source The source value
         * @param fieldName A description of the field being interpolated. The implementation may use this to
         *                           log stuff.
         * @return The interpolated value.
         */
        String transform(String source, String fieldName);
    }

    assertTrue(Double.isNaN(DoubleMath.log2(Double.NaN)));
  }

  @GwtIncompatible // StrictMath
  private strictfp double trueLog2(double d) {
    double trueLog2 = StrictMath.log(d) / StrictMath.log(2);
    // increment until it's >= the true value
    while (StrictMath.pow(2.0, trueLog2) < d) {
      trueLog2 = StrictMath.nextUp(trueLog2);
    }
    // decrement until it's <= the true value

  @Throws(IOException::class)
  fun shutdown() {
    delegate.shutdown()
  }

  @Synchronized override fun after() {
    try {
      shutdown()
    } catch (e: IOException) {
      logger.log(Level.WARNING, "MockWebServer shutdown failed", e)
    }
  }

  override fun toString(): String = delegate.toString()

  @Throws(IOException::class)
  override fun close() = delegate.close()

	public static final field Companion Lokhttp3/logging/HttpLoggingInterceptor$Logger$Companion;
	public static final field DEFAULT Lokhttp3/logging/HttpLoggingInterceptor$Logger;
	public abstract fun log (Ljava/lang/String;)V
}

public final class okhttp3/logging/HttpLoggingInterceptor$Logger$Companion {
}

public final class okhttp3/logging/LoggingEventListener : okhttp3/EventListener {

	EnvCompressExtensions      = "MINIO_COMPRESSION_EXTENSIONS"
	EnvCompressMimeTypes       = "MINIO_COMPRESSION_MIME_TYPES"

	// Include-list for compression.
	DefaultExtensions = ".txt,.log,.csv,.json,.tar,.xml,.bin"
	DefaultMimeTypes  = "text/*,application/json,application/xml,binary/octet-stream"
)

// DefaultKVS - default KV config for compression settings
var (
	DefaultKVS = config.KVS{
		config.KV{

			return
		case <-scannerTimer.C:
			// Reset the timer for next cycle.
			// If scanner takes longer we start at once.
			scannerTimer.Reset(scannerCycle.Load())

			stopFn := globalScannerMetrics.log(scannerMetricScanCycle)
			cycleInfo.current = cycleInfo.next
			cycleInfo.started = time.Now()
			globalScannerMetrics.setCycle(&cycleInfo)

			bgHealInfo := readBackgroundHealInfo(ctx, objAPI)

 */
package org.codelibs.fess.es.log.allcommon;

import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
import java.util.Map;
import java.util.function.Function;

import org.codelibs.fess.es.log.allcommon.EsAbstractEntity.DocMeta;

/// tip

尽可能选择使用 `Annotated` 的版本。

///

```Python hl_lines="13  15  22  25"
{!> ../../docs_src/background_tasks/tutorial002.py!}
```

////

该示例中，信息会在响应发出 *之后* 被写到 `log.txt` 文件。

如果请求中有查询，它将在后台任务中写入日志。

然后另一个在 *路径操作函数* 生成的后台任务会使用路径参数 `email` 写入一条信息。

## 技术细节

        super.setUp();
        ComponentUtil.register(new SystemHelper(), "systemHelper");
        crawlerStatsHelper = new CrawlerStatsHelper() {
            @Override
            protected void log(final StringBuilder buf) {
                localLogMsg.set(buf.toString());
            }
        };
        crawlerStatsHelper.init();
    }

    public void test_beginDone() {
        String key = "test";