function acceptParser(accepts) {
    var acceptable = accepts;

    if (!Array.isArray(acceptable)) {
        acceptable = [acceptable];
    }
    assert.arrayOfString(acceptable, 'acceptable');

    acceptable = acceptable
        .filter(function filter(a) {
            return a;
        })
        .map(function map(a) {
            return a.indexOf('/') === -1 ? mime.getType(a) : a;
        })
        .filter(function filter(a) {
            return a;
        });

    var e = new NotAcceptableError('Server accepts: ' + acceptable.join());

    function parseAccept(req, res, next) {
        if (req.accepts(acceptable)) {
            return next();
        }
        return next(e);
    }

    return parseAccept;
}
Parses the `Accept` header, and ensures that the server can respond to what
the client asked for. In almost all cases passing in `server.acceptable` is
all that's required, as that's an array of content types the server knows
how to respond to (with the formatters you've registered). If the request is
for a non-handled type, this plugin will return a `NotAcceptableError` (406).

Note you can get the set of types allowed from a restify server by doing
`server.acceptable`.

@public
@function acceptParser
@throws   {NotAcceptableError}
@param    {String[]}    accepts - array of accept types.
@returns  {Function}              restify handler.
@example
server.use(restify.plugins.acceptParser(server.acceptable));