code: def is_bool(t):
      return t is bool or isinstance(t, bool)
  
file_path: coremltools/coremltools/converters/mil/mil/types/type_bool.py
imports: from .annotate import annotate, class_annotate, delay_type
  from .type_spec import Type
label_desc: Use image node_id 1 for calling a global function with example usage: is_bool(t) and returns: unknown