Trying to make the match a String

Author: ckittl

Jenkinsfile

@@ -620,17 +620,21 @@ def resolveBranchName(String featureBranchPRMinusNo, String orgName, String repo
     def branchNoMatcher = featureBranchPRMinusNo =~ /PR-(.*)/
     assert branchNoMatcher.find()
 
-    String prNo = branchNoMatcher[0][1]
+    String prNo = branchNoMatcher.group(1)
     log("i", "PR number" + prNo)
 
     // curl the repo based on the feature branch no to get the branch information
     /// Note: only works for public repos! Otherwise credentials needs to be passed
-    def curlUrl = "set +x && curl -s https://api.github.com/repos/" + orgName + "/" + repoName + "/pulls/" + prNo
-    String response = sh(script: curlUrl, returnStdout: true)
+    String response = curlByPR(prNo, orgName, repoName)
     log("i", "API response:" + response)
     def jsonResponse = readJSON text: response
     def branchName = jsonResponse.head.ref
 
     return branchName
+}
 
+def curlByPR(String prId, String orgName, String repoName) {
+    def curlUrl = "set +x && curl -s https://api.github.com/repos/" + orgName + "/" + repoName + "/pulls/" + prId
+    String jsonResponseString = sh(script: curlUrl, returnStdout: true)
+    return jsonResponseString
 }