call to set all tensors data as embedded data. save_model saves all the tensors data as embedded data after calling this function.
    @params
    model: ModelProto to be converted.

def convert_model_from_external_data(model):  # type: (ModelProto) -> None
    """
    call to set all tensors data as embedded data. save_model saves all the tensors data as embedded data after calling this function.
    @params
    model: ModelProto to be converted.
    """
    for tensor in _get_all_tensors(model):
        if uses_external_data(tensor):
            if not tensor.HasField("raw_data"):
                raise ValueError("raw_data field doesn't exist.")
            del tensor.external_data[:]
            tensor.data_location = TensorProto.DEFAULT