'Print info about this set of registrations to stdout.'

def _dump(self):

    self._lock.acquire()
    try:
        print ('Prefix    %s:' % self._prefix)
        if self._overrides:
            print '        Overrides:'
            for key in sorted(self._overrides):
                print ('                %s    =    %r' % (key, self._overrides[key]))
        else:
            print '        No    overrides'
        if self._defaults:
            print '        Defaults:'
            for key in sorted(self._defaults):
                print ('                %s    =    %r' % (key, self._defaults[key]))
        else:
            print '        No    defaults'
        print ('-' * 40)
    finally:
        self._lock.release()
