Delete all rows from table in NHibernate

I have an application using Fluent NHibernate and NHibernate, I have a generic DAO class, in this class I have generic methods for persisting data, but I want to create a generic method to delete all records from one table. At this point, I have this method:

Public Sub ClearTable(ByVal sTable As String)
    Using session = SessaoNHibernate.OpenSession()
        Using transaction = session.BeginTransaction()
            Try
                session.CreateSQLQuery("delete from " & sTable).ExecuteUpdate()
                transaction.Commit()
                session.Flush()
            Catch ex As Exception
                transaction.Rollback()
            End Try
        End Using
    End Using
End Sub

      

        
        
        
      

    

I have a generic class, so I want to create a method that shouldn't pass the table name. Because the generic class knows its type.