How to read and parse data from json file in server?

please guide me in this problem…

Import Jsonslurper like this:
import groovy.json.JsonSlurper as JsonSlurper

This response parameter will be your json formal response.

and create a custom keyword mentioned below:

def parseJsonResponse(ResponseObject response) {
		def slurper = new JsonSlurper()
		def result = slurper.parseText(response.getResponseBodyContent())
		KeywordUtil.markPassed("Response is: " +result)
		return result;
	catch(WebElementNotFoundException e){
		KeywordUtil.markFailed('Error Occurred: '+e.printStackTrace())


thank you, i want read my value az test data from server.
how i can use this keyword for this goal?

thank you dear @Marek_Melocik