chore: import upstream snapshot with attribution

python/semantic_kernel/template_engine/blocks/block.py

@@ -0,0 +1,24 @@
+# Copyright (c) Microsoft. All rights reserved.
+
+import logging
+from typing import ClassVar
+
+from pydantic import field_validator
+
+from semantic_kernel.kernel_pydantic import KernelBaseModel
+from semantic_kernel.template_engine.blocks.block_types import BlockTypes
+
+logger: logging.Logger = logging.getLogger(__name__)
+
+
+class Block(KernelBaseModel):
+    """A block."""
+
+    type: ClassVar[BlockTypes] = BlockTypes.UNDEFINED
+    content: str
+
+    @field_validator("content", mode="before")
+    @classmethod
+    def content_strip(cls, content: str):
+        """Strip the content of the block."""
+        return content.strip()