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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 _initialize_plugin_system(self) -> None: """Initialize the plugin system"""

        self._preloop_hooks = []
        self._postloop_hooks = []
        self._postparsing_hooks = []
        self._precmd_hooks = []
        self._postcmd_hooks = []
        self._cmdfinalization_hooks = []