Return the inner iterator's children as a RecursiveCachingIterator

# RecursiveCachingIterator::getChildren

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

RecursiveCachingIterator::getChildren — Return the inner iterator's children as a RecursiveCachingIterator

### 说明

public function RecursiveCachingIterator::getChildren(): ?RecursiveCachingIterator
警告

本函数还未编写文档，仅有参数列表。

### 参数

此函数没有参数。

### 返回值

The inner iterator's children, as a RecursiveCachingIterator; or `null` if there is no children.

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