final Matcher matcher = pattern.matcher(line);
            if (matcher.matches()) {
                if (lineNum == 0) {
                    lineNum = Integer.parseInt(matcher.group(1));
                    list.clear();
                }
                list.add(matcher.group(2));
            } else {
                list.add(line);
            }
        }
        if (lineNum == 0 || list.isEmpty()) {

      sleepMicros("R", micros);
    }

    String readEventsAndClear() {
      try {
        return events.toString();
      } finally {
        events.clear();
      }
    }

    @Override
    public String toString() {
      return events.toString();
    }
  }

  @AndroidIncompatible // Mockito loses its ability to mock doGetRate as of Android 21

      sleepMicros("R", micros);
    }

    String readEventsAndClear() {
      try {
        return events.toString();
      } finally {
        events.clear();
      }
    }

    @Override
    public String toString() {
      return events.toString();
    }
  }

  @AndroidIncompatible // Mockito loses its ability to mock doGetRate as of Android 21

                            MemoryUtil.getMemoryUsageLog());
                }
            }
        } finally {
            docList.clear();
        }
    }

    /**
     * Deletes old documents that have the same URL but different document IDs
     * as the documents in the provided list. This prevents duplicate documents

    rangeMap.put(Range.open(3, 7), 1);
    rangeMap.put(Range.closed(9, 10), 2);
    rangeMap.put(Range.closed(12, 16), 3);
    RangeMap<Integer, Integer> sub = rangeMap.subRangeMap(Range.closed(5, 11));
    sub.clear();
    assertEquals(
        ImmutableMap.of(Range.open(3, 5), 1, Range.closed(12, 16), 3), rangeMap.asMapOfRanges());
  }

  public void testCopyOfTreeRangeMap() {

        String[] testOrigins = { "https://example.com", "https://test.example.com", "http://localhost:8080" };

        for (String origin : testOrigins) {
            processCalled = false;
            responseHeaders.clear();

            HttpServletRequest request = createMockRequest();
            HttpServletResponse response = createMockResponse();

            corsHandler.process(origin, request, response);

    dns.assertRequests(PROXY_A_HOST)
    assertThat(selection1.hasNext()).isFalse()
    assertThat(routeSelector.hasNext()).isTrue()
    dns.clear(PROXY_B_HOST)
    assertFailsWith<UnknownHostException> {
      routeSelector.next()
    }
    dns.assertRequests(PROXY_B_HOST)
    assertThat(routeSelector.hasNext()).isTrue()
    dns[PROXY_A_HOST] = dns.allocate(1)

                log.trace("Tree handle released to connection pool for reuse");
                // The connection pool will handle cleanup based on its own timeout settings
            }
        }

        // Clear attribute cache only if we're doing strict cleanup
        if (this.transportContext.getConfig().isStrictResourceLifecycle()) {
            clearAttributeCache();
        }
    }

    /**

eyes, but it said nothing.

  `Perhaps it doesn't understand English,' thought Alice; `I
daresay it's a French mouse, come over with William the
Conqueror.'  (For, with all her knowledge of history, Alice had
no very clear notion how long ago anything had happened.)  So she
began again:  `Ou est ma chatte?' which was the first sentence in
her French lesson-book.  The Mouse gave a sudden leap out of the

        } finally {
            lock.writeLock().unlock();
        }
    }
    
    public void invalidate() {
        lock.writeLock().lock();
        try {
            children.clear();
            isComplete = false;
            hasChanges = true;
        } finally {
            lock.writeLock().unlock();
        }
    }
}
```

### 4.3 Directory Lease Manager
```java