Ast_helper.SigSignature items
val mk : ?loc:loc -> Parsetree.signature_item_desc -> Parsetree.signature_itemval value : ?loc:loc -> Parsetree.value_description -> Parsetree.signature_itemval type_ : 
  ?loc:loc ->
  Asttypes.rec_flag ->
  Parsetree.type_declaration list ->
  Parsetree.signature_itemval type_subst : 
  ?loc:loc ->
  Parsetree.type_declaration list ->
  Parsetree.signature_itemval type_extension : 
  ?loc:loc ->
  Parsetree.type_extension ->
  Parsetree.signature_itemval exception_ : 
  ?loc:loc ->
  Parsetree.type_exception ->
  Parsetree.signature_itemval module_ : 
  ?loc:loc ->
  Parsetree.module_declaration ->
  Parsetree.signature_itemval mod_subst : 
  ?loc:loc ->
  Parsetree.module_substitution ->
  Parsetree.signature_itemval rec_module : 
  ?loc:loc ->
  Parsetree.module_declaration list ->
  Parsetree.signature_itemval modtype : 
  ?loc:loc ->
  Parsetree.module_type_declaration ->
  Parsetree.signature_itemval modtype_subst : 
  ?loc:loc ->
  Parsetree.module_type_declaration ->
  Parsetree.signature_itemval open_ : ?loc:loc -> Parsetree.open_description -> Parsetree.signature_itemval include_ : 
  ?loc:loc ->
  Parsetree.include_description ->
  Parsetree.signature_itemval class_ : 
  ?loc:loc ->
  Parsetree.class_description list ->
  Parsetree.signature_itemval class_type : 
  ?loc:loc ->
  Parsetree.class_type_declaration list ->
  Parsetree.signature_itemval extension : 
  ?loc:loc ->
  ?attrs:attrs ->
  Parsetree.extension ->
  Parsetree.signature_itemval attribute : ?loc:loc -> Parsetree.attribute -> Parsetree.signature_itemval text : Docstrings.text -> Parsetree.signature_item list