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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def injectClassCallback(annotationName, depth, methodName, *args, **kwargs):
 """ Inject an annotation for a class method to be called after class initialization without dealing with metaclass. depth parameter specify the stack depth from the class definition. """

    locals = reflect.class_locals(depth, annotationName)
    annotations = locals.get(_CLASS_ANNOTATIONS_ATTR, None)
    if annotations is None:
        annotations = list()
        locals[_CLASS_ANNOTATIONS_ATTR] = annotations
    annotation = (annotationName, methodName, args, kwargs)
    annotations.append(annotation)