chore: import upstream snapshot with attribution

vllm/transformers_utils/config_parser_base.py

@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+from abc import ABC, abstractmethod
+from pathlib import Path
+
+from transformers import PretrainedConfig
+
+
+class ConfigParserBase(ABC):
+    @abstractmethod
+    def parse(
+        self,
+        model: str | Path,
+        trust_remote_code: bool,
+        revision: str | None = None,
+        code_revision: str | None = None,
+        **kwargs,
+    ) -> tuple[dict, PretrainedConfig]:
+        raise NotImplementedError