@Nullable
private static Boolean isOverrides(final PyFunction pyFunction) {
final PyClass clazz = PyUtil.getContainingClassOrSelf(pyFunction);
assert clazz != null : "Refactoring called on function, not method: " + pyFunction;
for (final PyClass parentClass : clazz.getSuperClasses()) {
final PyFunction parentMethod = parentClass.findMethodByName(pyFunction.getName(), true);
if (parentMethod != null) {
return true;
}
}
return null;
}
