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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 client_for(self, config_path, quiet=False, bootstrap_server=False, create_client=False):
 """Get a cached client for a project, otherwise create one."""

        client = None
        abs_path = os.path.abspath(config_path)
        if abs_path in self.clients:
            client = self.clients[abs_path]
        elif create_client:
            client = self.create_client(config_path)
            if client.setup(quiet=quiet, bootstrap_server=bootstrap_server):
                self.clients[abs_path] = client
        return client