Function parse_css 

pub fn parse_css(
    source: Vc<Box<dyn Source>>,
    origin: Vc<Box<dyn ResolveOrigin>>,
    import_context: Option<Vc<ImportContext>>,
    ty: CssModuleType,
    environment: Option<Vc<Environment>>,
    feature_flags: LightningCssFeatureFlags,
    module_css_debuggable_idents: bool,
) -> Vc<ParseCssResult>