Deprecated function, equivalent to fn(*args). (deprecated)
tft.apply_function(
fn, *args
)
In previous versions of tf.Transform, it was necessary to wrap function
application in apply_function, that is call apply_function(fn, args)
instead of calling fn(args) directly. This was necessary due to limitations
in the ability of tf.Transform to inspect the TensorFlow graph. These
limitations no longer apply so apply_function is no longer needed.