docs: function PackageDependents(name, version, callback) {
      if (typeof version === "function") {
          callback = version
          version = "latest"
      }
      GetDependents(name, function(err, packages) {
          if (err) { return callback(err) }
          SameTime(packages.map(function (c) {
              return function (fn) {
                  PackageJson(c, version).then(function (json) {
                      fn(null, json)
                  }).catch(function (err) {
                      fn(err)
                  })
              }
          }), function (err, packages) {
              callback(err, packages || [])
          })
      })
  }