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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 get_service_state_object_id(subsystem: str, name: str, version: str) -> str: """Return service state data object key. Args: subsystem (str):
 Subsystem the service belongs to name (str):
 Name of the Service version (str):
 Version of the Service Returns: str, Key used to store the service state data object """

        return '{}:{}:{}'.format(subsystem, name, version)