Source/JavaScriptCore/inspector/scripts/tests/fail-on-duplicate-type-member-names.json - WebKit - Git at Google

 [
 {
     "domain": "OverlayTypes",
     "types": [
         {
             "id": "Point",
             "type": "object",
             "properties": [
                 { "name": "x", "type": "integer" },
                 { "name": "x", "type": "integer" }
             ]
         }
     ]
 }
 ]
	[
	{
	"domain": "OverlayTypes",
	"types": [
	{
	"id": "Point",
	"type": "object",
	"properties": [
	{ "name": "x", "type": "integer" },
	{ "name": "x", "type": "integer" }
	]
	}
	]
	}
	]