code: def get_default_cdtype():
      """Get backend default complex dtype."""
      return _config.DEFAULT_COMPLEX_DTYPE
  
file_path: geomstats/geomstats/_backend/_dtype_utils.py
imports: import functools
  import inspect
  import types
  from geomstats._backend import _backend_config
label_desc: Use image node_id 6 for calling a global function with example usage: get_default_cdtype() and returns: _config