code: def test_signature():
      npt.assert_(
          doc["Signature"].startswith("numpy.multivariate_normal(")
      )
      npt.assert_(doc["Signature"].endswith("spam=None)"))
  
imports: import textwrap
  from dipy.workflows.docstring_parser import NumpyDocString
  import numpy.testing
label_desc: Use image node_id 1 for calling a global function with example usage: test_signature() without return types