Nmm_ocaml : Txt_utils.lines_of_abstract

let lines_of_abstract_hdr (doc_settings : t_doc_settings) (doc_class : t_doc_class) : string list =
        match doc_settings.abstract_hdr with
        |None -> []
        |Some (hdr,_) -> 
                lines_of_string doc_settings doc_settings.abstract_indent hdr