| 1234567891011121314151617181920 | from typing import Optionalfrom pydantic import Fieldfrom pydantic_settings import BaseSettingsclass UpstashConfig(BaseSettings):    """    Configuration settings for Upstash vector database    """    UPSTASH_VECTOR_URL: Optional[str] = Field(        description="URL of the upstash server (e.g., 'https://vector.upstash.io')",        default=None,    )    UPSTASH_VECTOR_TOKEN: Optional[str] = Field(        description="Token for authenticating with the upstash server",        default=None,    )
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