«Менеджери контексту» - це будь-які Python-об'єкти, які можна використовувати в операторі `with`.

Наприклад, [можна використати `with`, щоб прочитати файл](https://docs.python.org/3/tutorial/inputoutput.html#reading-and-writing-files):

```Python
with open("./somefile.txt") as f:
    contents = f.read()
    print(contents)
```

Під капотом `open("./somefile.txt")` створює об'єкт, який називається «Менеджер контексту».

                    systemRegistry.cleanUp();
                    Thread commandThread = new Thread(() -> {
                        try {
                            systemRegistry.execute(reader.readLine(
                                    context.cwd.get().getFileName().toString() + " mvnsh> ",
                                    null,
                                    (MaskingCallback) null,

     * seenExceptionsField to its exception
     *
     * Thread2: calls setException(), which returns false, CASes seenExceptionsField to its
     * exception, and wrongly believes that its exception is new (leading it to logging it when it
     * shouldn't)
     *
     * Our solution is for threads to CAS seenExceptionsField from null to a Set populated with _the

  private ExceptionTypePolicy policy = ExceptionTypePolicy.NPE_OR_UOE;

  /*
   * Requiring desugaring for guava-*testlib* is likely safe, at least for the reflection-based
   * NullPointerTester. But if you are a user who is reading this because this change caused you
   * trouble, please let us know: https://github.com/google/guava/issues/new
   */
  @IgnoreJRERequirement
  public NullPointerTester() {
    try {
      /*

labels.jobStatus=Status
labels.labelTypeIds=Labels
labels.lang=Language
labels.outputs=Outputs
labels.pos=Part-of-speech
labels.purgeJobLogDay=Delete old job logs
labels.purgeUserInfoDay=Delete old user logs
labels.reading=Reading
labels.roleTypeIds=Role IDs
labels.scriptData=Script
labels.scriptResult=Result
labels.scriptType=Execution Method
labels.segmentation=Segmentation
labels.startTime=Start Time
labels.target=Target

                    }
                    current.println("        $name: \"$value\"")
                }
            }
            if (body != null) {
                // Throw out the leading newline we get from parsing the body
                body = body.substring(1)
                // Replace """ quoted strings with valid json ones
                body = replaceBlockQuote(body)

      return null // Another edit is in progress.
    }

    if (entry != null && entry.lockingSourceCount != 0) {
      return null // We can't write this file because a reader is still reading it.
    }

    if (mostRecentTrimFailed || mostRecentRebuildFailed) {
      // The OS has become our enemy! If the trim job failed, it means we are storing more data than

   * it slower than the native version.
   *
   * @param input the input bytes
   * @param offset the offset into the array at which to start reading
   * @param length the number of bytes from the input to read
   * @return a long of a concatenated 8 bytes
   */
  static long load64Safely(byte[] input, int offset, int length) {
    long result = 0;

	if cap(dst) < skip {
		dst = make([]byte, 0, skip+1024)
	}
	dst = dst[:skip]
	if skip > 0 {
		n, err := io.ReadFull(r.buf, dst)
		if err != nil && err != io.ErrUnexpectedEOF {
			// If an EOF happens after reading some but not all the bytes,
			// ReadFull returns ErrUnexpectedEOF.
			return dst[:n], err
		}
		dst = dst[:n]
		if err == io.ErrUnexpectedEOF {
			return dst, io.EOF
		}
	}
	// Read until next line.

    <property name="message" value="Empty javadoc comments are forbidden" />
  </module>

  <!--
    We include snippets that are wrapped in `// tag` and `// end` into the
    docs, stripping the leading spaces. If the context is wider than 76
    characters then it'll need to scroll. This fails the build if it sees
    such snippets.
  -->
  <module name="org.elasticsearch.gradle.internal.checkstyle.SnippetLengthCheck">