Properties detail are missing from VertexLabel using JanusGraphManagement API

Question

I am using janugraph 1.0.0 and using cassandra as backend storage.This is configuration file with cassandra details, janusgraph-cql/.properties

cassandra config

Now using gremlin console, I have added vertex and I am able to fetch it . gremlin console vertex insert

Now on trying to get the properties and the datatype, using JanusGraphManagemnet API. fetch via mangaemnet API

I am unable to get the property details , Is there any way to get the details using management API ?