var assert = require('assert-plus');
 
    function fooAccount(options, callback) {
        assert.object(options, 'options');
        assert.number(options.id, 'options.id');
        assert.bool(options.isManager, 'options.isManager');
        assert.string(options.name, 'options.name');
        assert.arrayOfString(options.email, 'options.email');
        assert.func(callback, 'callback');
 
        // Do stuff
// Do stuff
        callback(null, {});
    }

function MantaFs(opts) {
    assert.object(opts, 'options');
    assert.object(opts.cache, 'options.cache');
    assert.object(opts.log, 'options.log');
    assert.object(opts.manta, 'options.manta');
    assert.number(opts.uid, 'uid');
    assert.number(opts.gid, 'gid');

    events.EventEmitter.call(this, opts);

    this.cache = opts.cache;

    this.log = opts.log.child({component: 'MantaFsApi'}, true);
    this.manta = opts.manta;
    
    //...
}

function execFilePlus(args, cb) {
    assert.object(args, 'args');
    assert.arrayOfString(args.argv, 'args.argv');
    assert.optionalNumber(args.maxBuffer, 'args.maxBuffer');
    assert.object(args.log, 'args.log');
    assert.func(cb);
    var argv = args.argv;

    args.log.trace({exec: true, argv: argv}, 'exec start');
    var execOpts = {};
    
    //...
}

function createClient(opts) {
    assert.object(opts, 'opts');
    assert.string(opts.host, 'opts.host');
    assert.object(opts.log, 'opts.log');
    assert.number(opts.port, 'opts.port');
    assert.string(opts.client_id, 'opts.client_id');

    opts.log = opts.log.child({ component: 'stream-client' });
    return new StreamClient(opts);
}

_.forEach(balanceOfResult.output, (result) => {
      let balance = new BigNumber(result.output || 0);
      if (balance <= 0) return;

      let asset = result.input.params[0];
      let total = balances[asset];

      if (total) {
        balances[asset] = balance.plus(total).toFixed();
      } else {
        balances[asset] = balance.toFixed();
      }
    })