async function findItem(item) {
        // SA.logger.debug('file storage -> find item -> searching for item id' + itemId)
        const contents = await readFile()
        const idx = contents.findIndex(x => x[item.key] == item.value)
        // SA.logger.debug('file storage -> find item -> found item index -> ' + idx)
        return idx > -1 ? contents[idx] : undefined
    }
@param {{
  key: string,
  value: any
}} item