httpurlconnection_to_curl.kt

        fun toCurlRequest(request: Request): String? {
            val builder = StringBuilder("curl -v ")
            // Method
            builder.append("-X ").append(request.method).append(" \\\n  ")
            // Headers
            for ((key, value1) in request.headers) {
                builder.append("-H \"").append(key).append(":")
                for (value in value1) builder.append("").append(value)
                builder.append("\" \\\n  ")
            }
            // Body
            builder.append("-d '").append(String(request.body)).append("' \\\n  ")
            // URL
            builder.append("\"").append(request.url).append("\"")
            return builder.toString()
        }