gen edge ii: attributed src_id range: (10, 20), dst_id range: (10, 20)

gen edge ui: weighted. src_id range: (0, 10), dst_id range: (0, 10)

gen node item: attributed. id range: (10, 20)

gen node user: weighted. id range: (0, 10)

Get all the distinct ids that appear as the destination id of an edge. For the above example, GetAllDstIds() --> {2, 3, 4, 1}

Get the in-degree values of all ids corresponding to GetAllDstIds(). For the above example, GetAllInDegrees() --> {2, 2, 1, 1}

Get the out-degree values of all ids corresponding to GetAllSrcIds(). For the above example, GetAllOutDegrees() --> {2, 2, 2}

Get all the distinct ids that appear as the source id of an edge. For example, 6 edges like [1 2] [2 3] [2 4] [1 3] [3 1] [3 2] GetAllSrcIds() --> {1,

Get all attributes if existed, the count of which is the same with Size().

Get all attributes if existed, the count of which is the same with Size().