code: def mask_indices(n, mask_func, k=0):
      mask_func_obj = inspect.unwrap(mask_func)
      mask_func_name = mask_func_obj.__name__
      try:
          ivy_mask_func_obj = getattr(
              ivy.functional.frontends.numpy, mask_func_name
          )
          a = ivy.ones((n, n))
          mask = ivy_mask_func_obj(a, k=k)
          indices = ivy.argwhere(mask.ivy_array)
          ret = indices[:, 0], indices[:, 1]
          return tuple(ret)
      except AttributeError as e:
          print(f"Attribute error: {e}")
  
file_path: ivy/ivy/functional/frontends/numpy/indexing_routines/generating_index_arrays.py
imports: import inspect
  import ivy
  from ivy.functional.frontends.numpy.func_wrapper import to_ivy_arrays_and_back
label_desc: Use image node_id 3 for calling a global function with example usage: mask_indices(n, mask_func, k) and returns: tuple