} catch (final NoSuchMethodException e) {
            fail("Required annotation method not found: " + e.getMessage());
        }
    }

    // Test creating custom implementation of annotation
    @Test
    public void test_customAnnotationImplementation() {
        final UriType customAnnotation = new UriType() {
            @Override

# don't exit if this fails ${MC} rm -r --force myminio/$BUCKET set -e ; # reset `e` as active else echo "Bucket '$BUCKET' does not exist, skipping purge." fi fi # Create the bucket if it does not exist if ! checkBucketExists $BUCKET ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already exists." fi # set versioning for bucket if [ ! -z $VERSIONING ] ; then if [ $VERSIONING = true ] ; then echo "Enabling versioning for '$BUCKET'" ${MC} version enable myminio/$BUCKET...

# don't exit if this fails ${MC} rm -r --force myminio/$BUCKET set -e ; # reset `e` as active else echo "Bucket '$BUCKET' does not exist, skipping purge." fi fi # Create the bucket if it does not exist if ! checkBucketExists $BUCKET ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already exists." fi # set versioning for bucket if [ ! -z $VERSIONING ] ; then if [ $VERSIONING = true ] ; then echo "Enabling versioning for '$BUCKET'" ${MC} version enable myminio/$BUCKET...

# don't exit if this fails ${MC} rm -r --force myminio/$BUCKET set -e ; # reset `e` as active else echo "Bucket '$BUCKET' does not exist, skipping purge." fi fi # Create the bucket if it does not exist if ! checkBucketExists $BUCKET ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already exists." fi # set versioning for bucket if [ ! -z $VERSIONING ] ; then if [ $VERSIONING = true ] ; then echo "Enabling versioning for '$BUCKET'" ${MC} version enable myminio/$BUCKET...

# don't exit if this fails ${MC} rm -r --force myminio/$BUCKET set -e ; # reset `e` as active else echo "Bucket '$BUCKET' does not exist, skipping purge." fi fi # Create the bucket if it does not exist if ! checkBucketExists $BUCKET ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already exists." fi # set versioning for bucket if [ ! -z $VERSIONING ] ; then if [ $VERSIONING = true ] ; then echo "Enabling versioning for '$BUCKET'" ${MC} version enable myminio/$BUCKET...

# don't exit if this fails ${MC} rm -r --force myminio/$BUCKET set -e ; # reset `e` as active else echo "Bucket '$BUCKET' does not exist, skipping purge." fi fi # Create the bucket if it does not exist if ! checkBucketExists $BUCKET ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already exists." fi # set versioning for bucket if [ ! -z $VERSIONING ] ; then if [ $VERSIONING = true ] ; then echo "Enabling versioning for '$BUCKET'" ${MC} version enable myminio/$BUCKET...

        collectValueFromNonCancelledFuture(index, future);
      }
    } finally {
      /*
       * "null" means: There is no need to access `futures` again during
       * `processCompleted` because we're reading each value during a call to
       * handleOneInputDone.
       */
      decrementCountAndMaybeComplete(null);
    }
  }

  /**

      size = 0;
      for (ValueEntry<K, V> entry = firstEntry; entry != null; entry = entry.successorInValueSet) {
        multimapIterationChain.delete(entry);
        // TODO(cpovirk): Also clear *InValueSet (after reading next) and nextInValueBucket?
      }
      firstEntry = null;
      lastEntry = null;
      modCount++;
    }
  }

  @Override
  Iterator<Entry<K, V>> entryIterator() {

      size = 0;
      for (ValueEntry<K, V> entry = firstEntry; entry != null; entry = entry.successorInValueSet) {
        multimapIterationChain.delete(entry);
        // TODO(cpovirk): Also clear *InValueSet (after reading next) and nextInValueBucket?
      }
      firstEntry = null;
      lastEntry = null;
      modCount++;
    }
  }

  @Override
  Iterator<Entry<K, V>> entryIterator() {

## 情境管理器 { #context-managers }

### 什麼是「情境管理器」 { #what-are-context-managers }

「情境管理器」是那些你可以在 `with` 陳述式中使用的 Python 物件。

例如，[你可以用 `with` 來讀取檔案](https://docs.python.org/3/tutorial/inputoutput.html#reading-and-writing-files)：

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

在底層，`open("./somefile.txt")` 會建立一個稱為「情境管理器」的物件。