public ServiceVertexType CreateVertexType(SecurityToken mySecurityToken, Int64 myTransactionToken,
ServiceVertexTypePredefinition myVertexTypePreDef)
{
var Request = ServiceRequestFactory.MakeRequestCreateVertexType(myVertexTypePreDef);
var Response = this.GraphDS.CreateVertexType <IVertexType>(mySecurityToken, myTransactionToken, Request,
ServiceReturnConverter.ConvertOnlyVertexType);
return(new ServiceVertexType(Response));
}