code: def _is_complex_int(dtype):
      return isinstance(dtype, str) and dtype.startswith("complex_int")
  
file_path: rasterio/rasterio/dtypes.py
imports: import numpy
  from rasterio.env import GDALVersion
label_desc: Use image node_id 9 for calling a global function with example usage: _is_complex_int(dtype) and returns: unknown