Volley Coroutines Sample request() no coroutines

VolleyRequest.kt

fun request(method: Int, url: String, headers: Map<String, String>, jsonRequest: JSONObject?,
            successListener: (json: JSONObject) -> Unit, errorListener: (error: Exception) -> Unit) {
    val request = object : JsonObjectRequest(method, url, jsonRequest, 
            Response.Listener<JSONObject> { json -> successListener(json) }, 
            Response.ErrorListener { e -> errorListener(e) }) {
        
        override fun getHeaders(): Map<String, String> = headers
        override fun parseNetworkError(volleyError: VolleyError): VolleyError {
            return volleyError.networkResponse?.let {
                Log.e("VolleyRequest", volleyError.networkResponse.headers.toString())
                Log.e("VolleyRequest", String(volleyError.networkResponse.data))
                VolleyError(String(volleyError.networkResponse.data))
            } ?: volleyError
        }
    }

    request.retryPolicy = DefaultRetryPolicy(5000, 2, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT)

    try {
        Volley.newRequestQueue(applicationContext).addToRequestQueue(request) // must be singleton!!
    } catch (e: Exception) {
        errorListener(e)
    }
}