`sig val mk : ?loc:Ast_helper.loc -> ?attrs:Ast_helper.attrs -> Parsetree.class_expr_desc -> Parsetree.class_expr val attr : Parsetree.class_expr -> Parsetree.attribute -> Parsetree.class_expr val constr : ?loc:Ast_helper.loc -> ?attrs:Ast_helper.attrs -> Ast_helper.lid -> Parsetree.core_type list -> Parsetree.class_expr val structure : ?loc:Ast_helper.loc -> ?attrs:Ast_helper.attrs -> Parsetree.class_structure -> Parsetree.class_expr val fun_ : ?loc:Ast_helper.loc -> ?attrs:Ast_helper.attrs -> Asttypes.arg_label -> Parsetree.expression option -> Parsetree.pattern -> Parsetree.class_expr -> Parsetree.class_expr val apply : ?loc:Ast_helper.loc -> ?attrs:Ast_helper.attrs -> Parsetree.class_expr -> (Asttypes.arg_label * Parsetree.expression) list -> Parsetree.class_expr val let_ : ?loc:Ast_helper.loc -> ?attrs:Ast_helper.attrs -> Asttypes.rec_flag -> Parsetree.value_binding list -> Parsetree.class_expr -> Parsetree.class_expr val constraint_ : ?loc:Ast_helper.loc -> ?attrs:Ast_helper.attrs -> Parsetree.class_expr -> Parsetree.class_type -> Parsetree.class_expr val extension : ?loc:Ast_helper.loc -> ?attrs:Ast_helper.attrs -> Parsetree.extension -> Parsetree.class_expr end`