def get_value ( self, object, name, trait = None ):
        cname = TraitsCache + name
        value = object.__dict__.get( cname, Undefined )
        if value is Undefined:
            if trait is None:
                trait = object.trait( name )

            object.__dict__[ cname ] = value = \
                trait.default_value_for( object, name )

        return value
Sets the selected tab. The tab is identified by the tab content
dataset/ETHPy150Open enthought/traits/traits/trait_handlers.py/TraitType.get_value--crossover with--dataset/ETHPy150Open rwl/muntjac/muntjac/ui/tab_sheet.py/TabSheet.setSelectedTab