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A placeholder method for backward compatibility.

The preprocessing logic has been included in the mobilenet_v3 model implementation. Users are no longer required to call this method to normalize the input data. This method does nothing and only kept as a placeholder to align the API surface between old and new version of model.

x A floating point numpy.array or a tf.Tensor.
data_format Optional data format of the image tensor/array. Defaults to None, in which case the global setting tf.keras.backend.image_data_format() is used (unless you changed it, it defaults to "channels_last").{mode}

Unchanged numpy.array or tf.Tensor.