`sig val mk : ?loc:Ast_helper.loc -> ?attrs:Ast_helper.attrs -> ?docs:Docstrings.docs -> Parsetree.class_field_desc -> Parsetree.class_field val attr : Parsetree.class_field -> Parsetree.attribute -> Parsetree.class_field val inherit_ : ?loc:Ast_helper.loc -> ?attrs:Ast_helper.attrs -> Asttypes.override_flag -> Parsetree.class_expr -> string option -> Parsetree.class_field val val_ : ?loc:Ast_helper.loc -> ?attrs:Ast_helper.attrs -> Ast_helper.str -> Asttypes.mutable_flag -> Parsetree.class_field_kind -> Parsetree.class_field val method_ : ?loc:Ast_helper.loc -> ?attrs:Ast_helper.attrs -> Ast_helper.str -> Asttypes.private_flag -> Parsetree.class_field_kind -> Parsetree.class_field val constraint_ : ?loc:Ast_helper.loc -> ?attrs:Ast_helper.attrs -> Parsetree.core_type -> Parsetree.core_type -> Parsetree.class_field val initializer_ : ?loc:Ast_helper.loc -> ?attrs:Ast_helper.attrs -> Parsetree.expression -> Parsetree.class_field val extension : ?loc:Ast_helper.loc -> ?attrs:Ast_helper.attrs -> Parsetree.extension -> Parsetree.class_field val attribute : ?loc:Ast_helper.loc -> Parsetree.attribute -> Parsetree.class_field val text : Docstrings.text -> Parsetree.class_field list val virtual_ : Parsetree.core_type -> Parsetree.class_field_kind val concrete : Asttypes.override_flag -> Parsetree.expression -> Parsetree.class_field_kind end`