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modules/diffusion/unet/basic.py

@@ -0,0 +1,15 @@
+# Copyright (c) 2023 Amphion.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+import torch.nn as nn
+from abc import abstractmethod
+
+
+class UNetBlock(nn.Module):
+    r"""Any module where forward() takes timestep embeddings as a second argument."""
+
+    @abstractmethod
+    def forward(self, x, emb):
+        r"""Apply the module to `x` given `emb` timestep embeddings."""