Implement all missing docstrings (#5298)

Co-authored-by: snyk-bot <snyk-bot@snyk.io>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

ultralytics/models/nas/predict.py

@@ -8,6 +8,29 @@ from ultralytics.utils import ops
 
 
 class NASPredictor(BasePredictor):
+    """
+    Ultralytics YOLO NAS Predictor for object detection.
+
+    This class extends the `BasePredictor` from Ultralytics engine and is responsible for post-processing the
+    raw predictions generated by the YOLO NAS models. It applies operations like non-maximum suppression and
+    scaling the bounding boxes to fit the original image dimensions.
+
+    Attributes:
+        args (Namespace): Namespace containing various configurations for post-processing.
+
+    Example:
+        ```python
+        from ultralytics import NAS
+
+        model = NAS('yolo_nas_s')
+        predictor = model.predictor
+        # Assumes that raw_preds, img, orig_imgs are available
+        results = predictor.postprocess(raw_preds, img, orig_imgs)
+        ```
+
+    Note:
+        Typically, this class is not instantiated directly. It is used internally within the `NAS` class.
+    """
 
     def postprocess(self, preds_in, img, orig_imgs):
         """Postprocess predictions and returns a list of Results objects."""