map[string]interface{}{"k": "a2", "v": "b2"},
					map[string]interface{}{"k": "a3", "v": "b3", "v2": "z"},
				},
			},
			schema: objectTypePtr(map[string]schema.Structural{
				"listMap": listMapType([]string{"k"}, objectTypePtr(map[string]schema.Structural{
					"k":  stringType,
					"v":  stringType,
					"v2": stringType,
				})),
			}),
			expectCost: map[string]int64{

			schema: apiextensions.JSONSchemaProps{
				Type: "object",
				Properties: map[string]apiextensions.JSONSchemaProps{
					"field": {
						Type:         "array",
						XListType:    &listMapType,
						XListMapKeys: []string{"k1", "k2"},
						Items: &apiextensions.JSONSchemaPropsOrArray{
							Schema: &apiextensions.JSONSchemaProps{
								Type: "object",

func listSetType(items *schema.Structural) schema.Structural {
	return arrayType("set", nil, items)
}

func listMapType(keys []string, items *schema.Structural) schema.Structural {
	return arrayType("map", keys, items)
}

func listMapTypePtr(keys []string, items *schema.Structural) *schema.Structural {
	l := listMapType(keys, items)
	return &l
}