fn close_problem<'a, MS: STeXModuleStore>(
p: &LaTeXParser<'a, LSPLineCol, STeXToken<LSPLineCol>, STeXParseState<'a, LSPLineCol, MS>>,
env: Environment<'a, LSPLineCol, STeXToken<LSPLineCol>>,
) -> EnvironmentResult<'a, LSPLineCol, STeXToken<LSPLineCol>>