Copy Versions from one Project to Another

import com.atlassian.jira.component.ComponentAccessor
import com.onresolve.scriptrunner.runner.rest.common.CustomEndpointDelegate
import groovy.json.JsonBuilder
import groovy.transform.BaseScript
import groovyx.net.http.HttpResponseDecorator
import groovyx.net.http.RESTClient
import javax.ws.rs.core.MultivaluedMap
import javax.ws.rs.core.Response

@BaseScript CustomEndpointDelegate delegate
getVersions { MultivaluedMap queryParams ->
    def applicationProperties = ComponentAccessor.applicationProperties
    def hostUrl = applicationProperties.getString('jira.baseurl')
    //Specify the Username
    def username = '<USERNAME>'
    //Specify the Password
    def password = '<PASSWORD>'
    //Specify the Project Key
    def projectKey = '<PROJECT_KEY>'

    final def headers = ['Authorization': "Basic ${"${username}:${password}".bytes.encodeBase64()}", 'Accept': 'application/json'] as Map

    def http = new RESTClient(hostUrl)
    http.setHeaders(headers)

    def resp = http.get(path: "/rest/api/2/project/${projectKey}/versions") as HttpResponseDecorator

    if (resp.status != 200) {
        log.warn 'Commander did not respond with 200'
    }

    def row = resp.data['name']

    Response.ok(new JsonBuilder(row).toPrettyString()).build()
}