public ServiceIndexDefinition CreateIndex(SecurityToken mySecurityToken, Int64 myTransactionToken, ServiceIndexPredefinition myVertexTypePreDef)
{
var Request = ServiceRequestFactory.MakeRequestCreateIndex(myVertexTypePreDef);
var Response = this.GraphDS.CreateIndex <IIndexDefinition>(mySecurityToken, myTransactionToken, Request,
ServiceReturnConverter.ConverteOnlyIndexDefinition);
return(new ServiceIndexDefinition(Response));
}