code: def _complex_dtype(dtype):
      return dtypes.to_complex_dtype(dtype)
  
imports: from functools import partial
  import unittest
  from absl.testing import absltest
  import numpy
  import scipy.signal
  from jax import lax
  import jax.numpy
  from jax._src import dtypes
  from jax._src import test_util
  import jax.scipy.signal
  from jax import config
label_desc: Use image node_id 2 for calling a global function with example usage: _complex_dtype(dtype) and returns: dtypes