00253 {
00254     boost::recursive_mutex::scoped_lock lock(m_zoneMutex);
00255     if(!m_valid)
00256         throw object_invalidated();
00257 
00258     // If there is nothing with this name available in the current security context,
00259     // we throw an exception -- whether or not a real property exists
00260     if (!memberAccessible(m_zoneMap.find(propertyName)))
00261         throw invalid_member(propertyName);
00262 
00263     if(m_allowRemoveProperties && m_propertyFunctorsMap.find(propertyName) != m_propertyFunctorsMap.end()) {
00264         unregisterProperty(propertyName);
00265     } else if (m_allowDynamicAttributes && m_attributes.find(propertyName) != m_attributes.end()
00266                && !m_attributes[propertyName].readonly) {
00267         unregisterAttribute(propertyName);
00268     }
00269 
00270     // If nothing is found matching, we'll just let it slide -- no sense causing exceptions
00271     // when the end goal is reached already.
00272 }