BloombergLP::bslstl::HashTable<UnorderedMapKeyConfiguration<basic_string<char> const, pair<basic_string<char> const, Json>>, TransparentHash, TransparentEqualTo, allocator<pair<basic_string<char> const, Json>>>::countElementsInBucket

Return the number elements contained in the bucket at the specified index. Note that this operation has linear run‐time complexity with respect to the number of elements in the indexed bucket.