code: def input_adapter(val: int):
      return val
  
file_path: ray/release/k8s_tests/solution.py
imports: from ray import serve
  from ray.serve.drivers import DAGDriver
  from ray.dag.input_node import InputNode
label_desc: Use image node_id 6 for calling a global function with example usage: input_adapter(val) and returns: val