Added missing RuntimeError to builder functions of models that do not…

… currently support feature extraction

timm/models/convmixer.py

@@ -101,6 +101,9 @@ def forward(self, x):
 
 
 def _create_convmixer(variant, pretrained=False, **kwargs):
+    if kwargs.get('features_only', None):
+        raise RuntimeError('features_only not implemented for ConvMixer models.')
+
     return build_model_with_cfg(ConvMixer, variant, pretrained, **kwargs)
 
 

timm/models/efficientformer.py

@@ -534,6 +534,9 @@ def _cfg(url='', **kwargs):
 
 
 def _create_efficientformer(variant, pretrained=False, **kwargs):
+    if kwargs.get('features_only', None):
+        raise RuntimeError('features_only not implemented for EfficientFormer models.')
+
     model = build_model_with_cfg(
         EfficientFormer, variant, pretrained,
         pretrained_filter_fn=_checkpoint_filter_fn,

timm/models/mvitv2.py

@@ -948,6 +948,9 @@ def checkpoint_filter_fn(state_dict, model):
 
 
 def _create_mvitv2(variant, cfg_variant=None, pretrained=False, **kwargs):
+    if kwargs.get('features_only', None):
+        raise RuntimeError('features_only not implemented for Multiscale Vision Transformer models.')
+
     return build_model_with_cfg(
         MultiScaleVit,
         variant,

timm/models/xcit.py

@@ -497,6 +497,9 @@ def checkpoint_filter_fn(state_dict, model):
 
 
 def _create_xcit(variant, pretrained=False, default_cfg=None, **kwargs):
+    if kwargs.get('features_only', None):
+        raise RuntimeError('features_only not implemented for Cross-Covariance Image Transformers models.')
+
     model = build_model_with_cfg(
         Xcit,
         variant,