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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 type(self):
 """ Returns the type of this kvstore. Returns ------- type : str the string type """

        kv_type = ctypes.c_char_p()
        check_call(_LIB.MXKVStoreGetType(self.handle, ctypes.byref(kv_type)))
        return py_str(kv_type.value)