public ColumnFactoryExpression(ColumnFactory factory)
 {
     _factory = factory;
 }
 public ColumnActionExpression(ColumnFactory factory, Func <ColumnDefinition, bool> matches) : base(factory)
 {
     _factory = factory;
     _matches = matches;
 }
 public ColumnActionExpression(ColumnFactory factory, Func<ColumnDefinition, bool> matches)
     : base(factory)
 {
     _factory = factory;
     _matches = matches;
 }