code: def is_torch_complex_tensor(c):
      return not isinstance(c, ComplexTensor) and torch.is_complex(c)
  
file_path: espnet/espnet2/enh/layers/complex_utils.py
imports: from typing import Sequence, Tuple, Union
  import torch
  from torch_complex import functional
  from torch_complex.tensor import ComplexTensor
label_desc: Use image node_id 2 for calling a global function with example usage: is_torch_complex_tensor(c) and returns: unknown