Function render_spreadsheet_core 

pub async fn render_spreadsheet_core(
    opts: &OptionSet,
    save_opt: Option<Box<dyn Fn(IndexMap<String, Value>) -> Result<(), GenericError> + Send + Sync>>,
    out_ref: Option<&str>,
) -> Result<ResultSet, GenericError>

👎Deprecated since 1.0.6:

This function is a wrapper for the renamed function process_spreadsheet_core