code: def _is_nested_list(m):
      return isinstance(m, list) and (not m or isinstance(m[0], list))
  
file_path: tf-quant-finance/tf_quant_finance/math/custom_loops.py
imports: import tensorflow.compat.v2
  from tf_quant_finance import utils
label_desc: Use image node_id 9 for calling a global function with example usage: _is_nested_list(m) and returns: unknown