code: def test_inline_doesnt_shrink_fast_functions_at_top():
      dsk = {"x": (inc, "y"), "y": 1}
      result = inline_functions(dsk, [], fast_functions={inc})
      assert result == dsk
  
imports: import itertools
  import pickle
  from functools import partial
  import pytest
  from flash.core.serve.dag.optimization import SubgraphCallable, cull, functions_of, fuse, fuse_linear, inline, inline_functions
  from flash.core.serve.dag.task import get, get_dependencies
  from flash.core.serve.dag.utils import apply, partial_by_order
  from flash.core.serve.dag.utils_test import add, inc
  from flash.core.utilities.imports import _TOPIC_SERVE_AVAILABLE
label_desc: Use image node_id 11 for calling a global function with example usage: test_inline_doesnt_shrink_fast_functions_at_top() without return types