[Zope] zclass propertysheets

[Danny Morgan]

for some reason, I can get some propertysheet information, but not others:

with 'history' being a property sheet of  a ZClass,

These work:
     return(context.propertysheets.history.propertyMap())
   
     return(context.propertysheets.history.getPropertyType('recent'))

But not this:

    return(context.propertysheets.history.getProperty('recent'))



Any clues will be appreciated

Danny