TSL_PropertyGraph.tsl

// Vertex.tsl
cell Vertex {
    int32 VertexId;
    string Name;
    list<string> PropertyKeys;
    list<string> PropertyValues;
}

// Edge.tsl
cell Edge {
    int32 EdgeId;
    string Relationship;
    list<string> PropertyKeys;
    list<string> PropertyValues;
    int32 SourceVertexId;
    int32 TargetVertexId;
}