depreciate get_observer

Signed-off-by: Kyle Sayers <[email protected]>

src/compressed_tensors/quantization/quant_args.py

@@ -110,12 +110,6 @@ class QuantizationArgs(BaseModel, use_enum_values=True):
         ),
     )
 
-    def get_observer(self):
-        """
-        :return: torch quantization FakeQuantize built based on these QuantizationArgs
-        """
-        return self.observer
-
     @field_validator("type", mode="before")
     def validate_type(cls, value) -> QuantizationType:
         if isinstance(value, str):
@@ -237,6 +231,13 @@ def pytorch_dtype(self) -> torch.dtype:
         else:
             raise ValueError(f"Invalid quantization type {self.type}")
 
+    def get_observer(self) -> str:
+        warnings.warn(
+            "`get_observer` is depreciated, please use `observer` attribute instead",
+            DeprecationWarning,
+        )
+        return self.observer
+
 
 def round_to_quantized_type(
     tensor: torch.Tensor, args: QuantizationArgs

src/compressed_tensors/quantization/quant_scheme.py

@@ -62,6 +62,7 @@ def validate_model_after(model: "QuantizationArgs") -> Dict[str, Any]:
 
         return model
 
+
 """
 Pre-Set Quantization Scheme Args
 """