从 tensorflow 模型转换为 uff 模型时，tensorrt 有很多不支持的操作（例如：）tf.unpack, tf.slice, tf.tile, tf.expand_dims, tf.fill, tf.cast, tf.floor_div, tf.range。有没有解决问题的简单方法？这是我从 pb 转换为 uff 模型时的警告：
Warning: No conversion function registered for layer: Unpack yet.
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Warning: No conversion function registered for layer: Range yet.
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Warning: No conversion function registered for layer: Slice yet.
Warning: No conversion function registered for layer: ExpandDims yet.
Warning: No conversion function registered for layer: Fill yet.
Warning: No conversion function registered for layer: Slice yet.
Warning: No conversion function registered for layer: Slice yet.
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Warning: No conversion function registered for layer: Fill yet.
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Warning: No conversion function registered for layer: Cast yet.
Warning: No conversion function registered for layer: Tile yet.
Warning: No conversion function registered for layer: Slice yet.
Warning: No conversion function registered for layer: ExpandDims yet.
Warning: No conversion function registered for layer: Fill yet.
Warning: No conversion function registered for layer: Slice yet.
Warning: No conversion function registered for layer: Slice yet.
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Warning: No conversion function registered for layer: Fill yet.
Warning: No conversion function registered for layer: Slice yet.
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Warning: No conversion function registered for layer: Unpack yet.