patch 9.0.1123: class function not implemented yet
Problem: Class function not implemented yet.
Solution: Implement defining and calling a class function.
diff --git a/src/proto/vim9class.pro b/src/proto/vim9class.pro
index 8ae20eb..edbddd2 100644
--- a/src/proto/vim9class.pro
+++ b/src/proto/vim9class.pro
@@ -6,6 +6,7 @@
void ex_type(exarg_T *eap);
int class_object_index(char_u **arg, typval_T *rettv, evalarg_T *evalarg, int verbose);
ufunc_T *find_class_func(char_u **arg);
+int class_member_exists(char_u *name, class_T **cl_ret, int *idx_ret, cctx_T *cctx);
void copy_object(typval_T *from, typval_T *to);
void object_unref(object_T *obj);
void copy_class(typval_T *from, typval_T *to);