code: def test_hexadecimal():
      res = decrypt(
          Config().library_default().complete_config(),
          "48 65 6c 6c 6f 20 6d 79 20 6e 61 6d 65 20 69 73 20 62 65 65 20 61 6e 64 20 49 20 6c 69 6b 65 20 64 6f 67 20 61 6e 64 20 61 70 70 6c 65 20 61 6e 64 20 74 72 65 65",
      )
  
      assert res == answer_str
  
imports: import pytest
  from ciphey import decrypt
  from ciphey.iface import Config
label_desc: Use image node_id 28 for calling a global function with example usage: test_hexadecimal() without return types