presto-memory/src/main/java/io/prestosql/plugin/memory/MemoryPageSourceProvider.java/MemoryPageSourceProvider/MemoryPageSourceProvider
class MemoryPageSourceProvider:    @Inject
    public MemoryPageSourceProvider(MemoryPagesStore pagesStore)
    {
        this.pagesStore = requireNonNull(pagesStore, "pagesStore is null");
    }