Function parse_with_doc_root_mod 

pub fn parse_with_doc_root_mod<P: AsRef<Path>>(
    path: P,
    doc_root_mod: Option<Arc<RwLock<ModNode<String, Option<String>>>>>,
) -> Result<Tree>

Parses the script is refered by the path with the root module of documentation.

See Parser::new_with_doc_root_mod_and_doc_current_mod and Parser::parse.