public UInt64 GetVertexCount(SecurityToken mySecurityToken, Int64 myTransactionToken, ServiceVertexType myVertexType)
{
var Request = ServiceRequestFactory.MakeRequestGetVertexCount(myVertexType);
var Response = this.GraphDS.GetVertexCount <UInt64>(mySecurityToken, myTransactionToken, Request,
ServiceReturnConverter.ConvertOnlyCount);
return(Response);
}