OCaml compiler library : Ast_helper.Ctf

`sig
val mk :
?loc:Ast_helper.loc ->
?attrs:Ast_helper.attrs ->
?docs:Docstrings.docs ->
Parsetree.class_type_field_desc -> Parsetree.class_type_field
val attr :
Parsetree.class_type_field ->
Parsetree.attribute -> Parsetree.class_type_field
val inherit_ :
?loc:Ast_helper.loc ->
?attrs:Ast_helper.attrs ->
Parsetree.class_type -> Parsetree.class_type_field
val val_ :
?loc:Ast_helper.loc ->
?attrs:Ast_helper.attrs ->
Ast_helper.str ->
Asttypes.mutable_flag ->
Asttypes.virtual_flag ->
Parsetree.core_type -> Parsetree.class_type_field
val method_ :
?loc:Ast_helper.loc ->
?attrs:Ast_helper.attrs ->
Ast_helper.str ->
Asttypes.private_flag ->
Asttypes.virtual_flag ->
Parsetree.core_type -> Parsetree.class_type_field
val constraint_ :
?loc:Ast_helper.loc ->
?attrs:Ast_helper.attrs ->
Parsetree.core_type -> Parsetree.core_type -> Parsetree.class_type_field
val extension :
?loc:Ast_helper.loc ->
?attrs:Ast_helper.attrs ->
Parsetree.extension -> Parsetree.class_type_field
val attribute :
?loc:Ast_helper.loc -> Parsetree.attribute -> Parsetree.class_type_field
val text : Docstrings.text -> Parsetree.class_type_field list
end`