Jenkins Job DSL Example - Bitbucket project and branches

bitbucket_project.groovy

// URL components
String baseUrl = "https://bitbucket.org/rest/api"
String version = "1.0"
String project = "SYS"

// Put it all together
String reposUrl = [baseUrl, version, "projects", project, "repos"].join("/")

def send_request(url_string){
	// Create URL
	Boolean enableAuthentication = true
	URL url = url_string.toURL()

	// Open connection
	URLConnection connection = url.openConnection()
	if (enableAuthentication) {
	    String username = "dummy_user"
	    String password = "dummy_pass"

	    // Create authorization header using Base64 encoding
	    String userpass = username + ":" + password;
	    String basicAuth = "Basic " + javax.xml.bind.DatatypeConverter.printBase64Binary(userpass.getBytes());

	    // Set authorization header
	    connection.setRequestProperty ("Authorization", basicAuth)
	}

	// Open input stream
	InputStream inputStream = connection.getInputStream()

	json_data = new groovy.json.JsonSlurper().parseText(inputStream.text)
	// Close the stream
	inputStream.close()

	return json_data
}

def reposJson = send_request(reposUrl)
def repos = reposJson.get('values')


repos.each { repo_item->
	def repoName = repo_item.get('name')
	String branchesUrl = [baseUrl, version, "projects", project, "repos" ,repoName, "branches"].join("/")
	// Get JSON output
	def branchesJson = send_request(branchesUrl)
	def branches = branchesJson.get('values')
	// Iterate through branches JSON
	branches.each { branch_item->
		def branchName = branch_item.get('displayId')             
		// Check if branch name and age are valid
		def jobName = "${project}-${repoName}-${branchName}".replaceAll('/', '-')
		job(jobName) {
	    	scm {
          // git or bitbucket URL
	      	git("git://github.com/${project}/${repoName}.git", branchName)
		    }
		    steps {
		    	maven("test -Dproject.name=${repoName}/${branchName}")
		    }
		}
	}
}

That is good, how do you get age of the branch? I don't see anything in the returned json about created/modified date at all.