ERROR: (MyJob.groovy, line 42) No signature of method: rocketServerUrl() is applicable for argument types: (java.lang.String) values: [https://chatservername.com]
Possible solutions: attachments(), channel(), commitInfoChoice(), customMessage(), includeCustomMessage(), includeTestLog(), includeTestSummary(), notifyAborted(), notifyBackToNormal(), notifyFailure(), notifyNotBuilt(), notifyRepeatedFailure(), notifySuccess(), notifyUnstable(), rawMessage(), startNotification(), webhookToken(), webhookTokenCredentialId()