/decorator /Column Header Menu Decorator(config)
ColumnHeaderMenuDecorator instance — end-users will
never need to do this themselves since grids are fully constructed based on their XML definition files by the
ColumnMenuDecorator adds a menu to each column that allows the user to add or remove columns
as necessary. The columns that can be added or removed are controlled entirely from the XML configuration that
is used to construct the
module:ct-grid/GridColumnModel. This includes whether a column is
mandatory or not.