code: def trace_method(cls, method, tracer=tracer):
      
  
      if is_traced(method):
          return False
  
      name = get_method_name(method)
      if is_untracable(method) or name in UNTRACABLE_NAMES:
          return False
  
      if is_class_method(method):
          setattr(cls, name, classmethod(tracer(method.im_func)))
      elif is_static_method(method):
          setattr(cls, name, staticmethod(tracer(method)))
      else:
          setattr(cls, name, tracer(method))
      return True
docs: Traces given class method using given tracer.
  
      :param cls: Class of the method.
      :type cls: object
      :param method: Method to trace.
      :type method: object
      :param tracer: Tracer.
      :type tracer: object
      :return: Definition success.
      :rtype: bool