Adding upstream version 0.5.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

openapi_pydantic/v3/v3_1/server_variable.py

@@ -0,0 +1,42 @@
+from typing import List, Optional
+
+from pydantic import BaseModel
+
+from openapi_pydantic.compat import PYDANTIC_V2, ConfigDict, Extra
+
+
+class ServerVariable(BaseModel):
+    """An object representing a Server Variable for server URL template substitution."""
+
+    enum: Optional[List[str]] = None
+    """
+    An enumeration of string values to be used if the substitution options are from a 
+    limited set. The array SHOULD NOT be empty.
+    """
+
+    default: str
+    """
+    **REQUIRED**. The default value to use for substitution,
+    which SHALL be sent if an alternate value is _not_ supplied.
+    Note this behavior is different than the [Schema Object's](#schemaObject) treatment 
+    of default values, because in those cases parameter values are optional.
+    If the [`enum`](#serverVariableEnum) is defined, the value MUST exist in the enum's 
+    values.
+    """
+
+    description: Optional[str] = None
+    """
+    An optional description for the server variable.
+    [CommonMark syntax](https://spec.commonmark.org/) MAY be used for rich text 
+    representation.
+    """
+
+    if PYDANTIC_V2:
+        model_config = ConfigDict(
+            extra="allow",
+        )
+
+    else:
+
+        class Config:
+            extra = Extra.allow