"field": stringType,
				}),
				"mapOfMap": mapType(mapTypePtr(&stringType)),
				"mapOfObj": mapType(objectTypePtr(map[string]schema.Structural{
					"field2": stringType,
				})),
				"mapOfListMap": mapType(listMapTypePtr([]string{"k"}, objectTypePtr(map[string]schema.Structural{
					"k": stringType,
					"v": stringType,
				}))),
				"mapOfList": mapType(listTypePtr(&stringType)),

// As in Go, the key's value must be assignable to the map's key type.
func (v Value) MapIndex(key Value) Value {
	v.mustBe(Map)
	tt := (*mapType)(unsafe.Pointer(v.typ()))

	// Do not require key to be exported, so that DeepEqual
	// and other programs can use all the keys returned by
	// MapKeys as arguments to MapIndex. If either the map

}
type Bad2 interface {
	Bad1
}
</pre>

<h3 id="Map_types">Map types</h3>

<p>
A map is an unordered group of elements of one type, called the
element type, indexed by a set of unique <i>keys</i> of another type,
called the key type.
The value of an uninitialized map is <code>nil</code>.
</p>

<pre class="ebnf">
MapType     = "map" "[" KeyType "]" ElementType .
KeyType     = Type .
</pre>