JsonConvert.DecodeObject function Not found

Hi,

To get selected file information to file handler end point, we are using the action parameters. In end point application to access the item property we need to decode request information set from the OneDrive. For that Microsoft reference site says to use the “JsonConvert.DecodeObject<string[]>(items);”

so what is the library? include this and where can i find that library?

Reference: https://docs.microsoft.com/en-us/onedrive/developer/file-handlers/

Thanks