code: def call_py_ffi(arg):
      _identity_py = tvm._ffi.get_global_func(
          "testing.nested_identity_py"
      )
      return _identity_py(arg)
  
file_path: tvm/python/tvm/testing/popen_pool.py
imports: import tvm
  from .None import _ffi_api
label_desc: Use image node_id 5 for calling a global function with example usage: call_py_ffi(arg) and returns: _identity_py