code: def test_symbols():
      globs = {
          "np": numpy,
          "mx": mxnet,
          "test_utils": mxnet.test_utils,
          "SymbolDoc": mxnet.symbol_doc.SymbolDoc,
      }
  
      # make sure all the operators are available
      import_into(globs, mxnet.symbol)
      doctest.testmod(mxnet.symbol_doc, globs=globs, verbose=True)
  
imports: import doctest
  import logging
  import mxnet
  import numpy
label_desc: Use image node_id 2 for calling a global function with example usage: test_symbols() without return types