hi, I am using PropertyGraphIndex and SimplePropertyGraphStore. But I need build the vector storage by myself. I cannot find any document about this. Could someone help me?

hi, I am using LLamaIndex KnowledgeGraph. I have one question about the node relationship. Each node can have the same relationship with multiple nodes. For example, Node 1 have the same relationship with node 2 and node3. When I use some node1.relationships[NodeRelationship.CHILD] =RelatedNodeInfo(node_id='node_2_id'), node1.relationships[NodeRelationship.CHILD] =RelatedNodeInfo(node_id='node_3_id'). The second will replace the previous. How to solve it?