presto-main/src/main/java/io/prestosql/operator/aggregation/TypedKeyValueHeap.java/TypedKeyValueHeap/addAll
class TypedKeyValueHeap:    public void addAll(Block keysBlock, Block valuesBlock)
    {
        for (int i = 0; i < keysBlock.getPositionCount(); i++) {
            add(keysBlock, valuesBlock, i);
        }
    }