apply(target, ctx, args) {
      if (!args.length) {
        throw new TypeError(
          `Failed to execute 'namedItem' on '${
            proto[Symbol.toStringTag]
          }': 1 argument required, but only 0 present.`
        )
      }
      return dataArray.find(mt => mt[itemMainProp] === args[0]) || null // Not `undefined`!
    }
Returns the MimeType object with the specified name.