input: Write a python function to map predictions to category labels.
  assert map_predictions_to_labels([0, 1, 2, 3], {0: 'positive', 1: 'negative', 2: 'neutral', 3: 'mixed'}) == ['positive', 'negative', 'neutral', 'mixed']
  assert map_predictions_to_labels([0, 0, 1, 1], {0: 'positive', 1: 'negative'}) == ['positive', 'positive', 'negative', 'negative']
  assert map_predictions_to_labels([2, 3, 3, 2], {2: 'neutral', 3: 'mixed'}) == ['neutral', 'mixed', 'mixed', 'neutral']
output: def map_predictions_to_labels(predictions, label_mapping):
      return [label_mapping[prediction] for prediction in predictions]