def install_basic_multifile_support(self):
if not self.multifile_installed:<EOL><INDENT>self.register_parser(MultifileCollectionParser(self))<EOL>self.register_parser(MultifileObjectParser(self, self))<EOL>self.multifile_installed = True<EOL><DEDENT>else:<EOL><INDENT>raise Exception('<STR_LIT>')<EOL><DEDENT>
Utility method for users who created a RootParser with register_default_plugins=False, in order to register only
 the multifile support
:return: