# Parse the cURL `response` as a JSON string
	private fun parse_response(response: CurlResponse): Serializable do
		if response isa CurlResponseSuccess then
			var str = response.body_str
			if str.is_empty then return new JsonObject
			var res = str.parse_json
			if res isa JsonParseError then
				var e = new NeoError(res.to_s, "JsonParseError")
				e.cause = res
				return e
			end
			if res == null then
				# empty response wrap it in empty object
				return new JsonObject
			else if res isa JsonObject and res.has_key("exception") then
				var error = "Neo4jError::{res["exception"] or else "null"}"
				var msg = ""
				if res.has_key("message") then
					msg = res["message"].to_s
				end
				return new NeoError(msg, error)
			else
				return res
			end
		else if response isa CurlResponseFailed then
			return new NeoError("{response.error_msg} ({response.error_code})", "CurlError")
		else
			return new NeoError("Unexpected response \"{response}\".", "CurlError")
		end
	end