`sig
val mk :
?attrs:Ast_helper.attrs ->
?docs:Docstrings.docs ->
?params:(Parsetree.core_type * Asttypes.variance) list ->
?priv:Asttypes.private_flag ->
Ast_helper.lid ->
Parsetree.extension_constructor list -> Parsetree.type_extension
val constructor :
?loc:Ast_helper.loc ->
?attrs:Ast_helper.attrs ->
?docs:Docstrings.docs ->
?info:Docstrings.info ->
Ast_helper.str ->
Parsetree.extension_constructor_kind -> Parsetree.extension_constructor
val decl :
?loc:Ast_helper.loc ->
?attrs:Ast_helper.attrs ->
?docs:Docstrings.docs ->
?info:Docstrings.info ->
?args:Parsetree.constructor_arguments ->
?res:Parsetree.core_type ->
Ast_helper.str -> Parsetree.extension_constructor
val rebind :
?loc:Ast_helper.loc ->
?attrs:Ast_helper.attrs ->
?docs:Docstrings.docs ->
?info:Docstrings.info ->
Ast_helper.str -> Ast_helper.lid -> Parsetree.extension_constructor
end`