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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 hook(self, debug, pid, address):
 """ Installs the function hook at a given process and address. @see: L{unhook} @warning: Do not call from an function hook callback. @type debug: L{Debug} @param debug: Debug object. @type pid: int @param pid: Process ID. @type address: int @param address: Function address. """

        return debug.break_at(pid, address, self)