code: def yummy_init(x: OnGrid, *args, **kwargs):
      return {"k": 3.0}
  
file_path: jaxdf/jaxdf/operators/dummy.py
imports: from jaxdf.core import operator
  from jaxdf.discretization import Continuous, Field, OnGrid
label_desc: Use image node_id 6 for calling a global function with example usage: yummy_init(x) and returns: dict