Creating custom ActionCell in CellTable Column

I want one of my table columns to have a deleteButton.

ActionCell<Entrata> deleteCell = new ActionCell<Entrata>("x",new Delegate<Entrata>() {
            @Override
            public void execute(Entrata object) {
                // rpc stuff.... 
            }
        });

Ok but this line generates an error:

Column<Entrata,Entrata> deleteColumn = new Column<Entrata, Entrata>(deleteCell);

"Cannot instantiate the type Column"

What do you think?

Here you go with working code:

Assumptions:

TYPE - Is the class of the data you show in rows of Cell Table it the same because I assume you want reference to the instance of data when you going to delete it

public class DeleteColumn extends Column<TYPE, TYPE>
{
    public DeleteColumn()
    {

        super(new ActionCell<TYPE>("Delete", new ActionCell.Delegate<TYPE>() {
            @Override
            public void execute(TYPE record)
            {
                /**
                  *Here you go. You got a reference to an object in a row that delete was clicked. Put your "delete" code here
                  */
            }
        }));
    }

    @Override
    public TYPE getValue(TYPE object)
    {
        return object;
    }
};