code: def _tagValuedProperties(self, content_type):
          
          rval = {}
          if not content_type in self.content_types.listMetaContentTypes:
              # We fail silently
              return rval
          for tree in self.content_types.getTreesFor(self, content_type):
              for elt in tree.getroot().getchildren():
                  tag = elt.tag.split('}')[-1] # Removing namespace if any
                  rval[toUnicode(tag)] = toUnicode(elt.text)
          return rval
docs: Document properties for property files having constructs like
          <ns:name>value</ns:name>
  
          :param content_type: ``contenttypes.CT_CORE_PROPS`` or ``contenttypes.CT_EXT_PROPS``
          :return: mapping like {'property name': 'property value', ...}