When uploading a file I set a filename with a path such as "docs/techdocs/content/docs/overview.md". But the file ends up being named "overview.md". I upload a file like so ``` fParam := openai.FileParam(fileData, info.vsName, MarkdownMimeType) fileParams := openai.FileNewParams{ File: fParam, Purpose: openai.F(openai.FilePurposeAssistants), } ``` It looks like the problem is here https://github.com/openai/openai-go/blob/16aac50722450d91a122572c1a6eeb2a3ed2880c/internal/apiform/encoder.go#L319 filename is being set to base