//map

A //map is a mapping of names to values in which all values are matched against the same schema.

The values parameter provides a schema used to validate each value of the map.

/.meta/map, the schema for //map definitions:

{
  "type": "//map",
  "required": {
    "type":   { "type": "//str", "value": "//map" },
    "values": "/.meta/schema"
  }
}