code: def test_get_dependencies_many():
      dsk = {
          "a": [1, 2, 3],
          "b": "a",
          "c": [1, (inc, 1)],
          "d": [(sum, "c")],
          "e": ["a", "b", "zzz"],
          "f": [["a", "b"], 2, 3],
      }
  
      tasks = [dsk[k] for k in ("d", "f")]
      s = get_dependencies(dsk, task=tasks)
      assert s == {"a", "b", "c"}
      s = get_dependencies(dsk, task=tasks, as_list=True)
      assert sorted(s) == ["a", "b", "c"]
  
      s = get_dependencies(dsk, task=[])
      assert s == set()
      s = get_dependencies(dsk, task=[], as_list=True)
      assert s == []
  
imports: import pickle
  from collections import namedtuple
  import pytest
  from flash.core.serve.dag.task import flatten, get, get_dependencies, get_deps, istask, literal, preorder_traversal, quote, subs
  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 9 for calling a global function with example usage: test_get_dependencies_many() without return types