chore: import upstream snapshot with attribution

python/paddle/incubate/layers/__init__.py

@@ -0,0 +1,31 @@
+#   Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from . import nn  # noqa: F401
+from .nn import (  # noqa: F401
+    batch_fc,
+    correlation,
+    fused_bn_add_act,
+    fused_seqpool_cvm,
+    partial_concat,
+    partial_sum,
+    pow2_decay_with_linear_warmup,
+    rank_attention,
+    search_pyramid_hash,
+    shuffle_batch,
+    tdm_child,
+    tdm_sampler,
+)
+
+__all__ = []