The community member asks if the DocumentSummaryIndex can be stored in Neo4j, as they already store PropertyGraphIndex in Neo4j and would like to have all indices under the same system. A comment from another community member suggests that this is not really possible, as it would be "very hacky" to do so, and that while Neo4j can be used as a vector store, it is not suitable as a general key-value store.
Can DocumentSummaryIndex be stored in Neo4j? I already store PropertyGraphIndex in Neo4j, so it would be convenient to have all indices under the same hood.
