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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 register_checkers(linter):
 """Register checkers."""

    linter.register_checker(ModelChecker(linter))
    linter.register_checker(DjangoInstalledChecker(linter))
    linter.register_checker(JsonResponseChecker(linter))
    linter.register_checker(FormChecker(linter))