Dataweave code to convert contents of array to a string using Dataweave 2.0 in Mule 4

arraytostring.dwl

%dw 2.0
import * from dw::core::Strings
output application/json
var payload = [{
	  "id": 1,
	  "name": "Book",
	  "quantity": 100
	},
	{
	  "id": 2,
	  "name": "Pen",
	  "quantity": 1000
	},
	{
	  "id": 3,
	  "name": "Bag",
	  "quantity": 20
	}]
var final = payload reduce ((item, value="Data:") -> 
	(value ++ "Id-" ++ item.id ++ ",Name-" ++ item.name ++ ",Quantity-" ++ item.quantity ++ ";")
)
---
{
	"substringAfter": substringAfter(final, "Data:"),
	"substringBeforeLast": substringBeforeLast( substringAfter(final, "Data:"), ";")	
}

// look up functions substringAfter, substringBefore, substringAfterLast, substringBeforeLast