Question about the purpose and implementation of bedrock_endpoint_url parameter

[FamousMai]

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Content

https://github.com/langgenius/dify-official-plugins/blob/f00fa1ff5cf57ded2ce28e2a122f270fa7e70999/models/bedrock/provider/amazon-bedrock.yaml#L126

I noticed that the bedrock_endpoint_url parameter is defined in the amazon-bedrock.yaml configuration file, but it wasn't being used in the code implementation until the recent fix. Could someone from the official team explain what this parameter is intended for? Is it for connecting to custom AWS Bedrock endpoints, private endpoints, or something else? Understanding its purpose would help users know when and how to use this configuration.