Dateien

var client = new Phaseo(apiKey: apiKey);

var uploaded = await client.UploadFile(new Dictionary<string, object>
{
    ["purpose"] = "batch",
    ["file"] = "data:application/json;base64,eyJ0ZXN0Ijp0cnVlfQ=="
});

var file = await client.RetrieveFile("file_123");
var content = await client.RetrieveFileContent("file_123");