presto-spi/src/main/java/io/prestosql/spi/block/VariableWidthBlockBuilder.java/VariableWidthBlockBuilder/VariableWidthBlockBuilder
class VariableWidthBlockBuilder:    public VariableWidthBlockBuilder(@Nullable BlockBuilderStatus blockBuilderStatus, int expectedEntries, int expectedBytes)
    {
        this.blockBuilderStatus = blockBuilderStatus;

        initialEntryCount = expectedEntries;
        initialSliceOutputSize = min(expectedBytes, MAX_ARRAY_SIZE);

        updateArraysDataSize();
    }