'Append an attribute name/value into L{Content.data}.
@param name: The attribute name
@type name: basestring
@param value: The attribute\'s value
@type value: basestring
@param content: The current content being unmarshalled.
@type content: L{Content}'

def append_attribute(self, name, value, content):

    type = self.resolver.findattr(name)
    if (type is None):
        log.warn('attribute    (%s)    type,    not-found', name)
    else:
        value = self.translated(value, type)
    Core.append_attribute(self, name, value, content)
