I have the following defined in a Jenkins pipeline:

{{ options {}}
  skipDefaultCheckout()
  timestamps()
  timeout(time: 5, unit: 'MINUTES')
{{ }}}

Upon updating from 2.37 to 2.38 of the "Pipeline: Groovy" plugin, when running this job, I get the following error:
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
WorkflowScript: 17: Invalid option type "timestamps". Valid option types: [buildDiscarder, disableConcurrentBuilds, overrideIndexTriggers, skipDefaultCheckout, skipStagesAfterUnstable, withCredentials, ws] @ line 17, column 3.
timestamps()
^

WorkflowScript: 18: Invalid option type "timeout". Valid option types: [buildDiscarder, disableConcurrentBuilds, overrideIndexTriggers, skipDefaultCheckout, skipStagesAfterUnstable, withCredentials, ws] @ line 18, column 3.
timeout(time: 5, unit: 'MINUTES')

Downgrading the plugin back to 2.37 resolved this issue, and let me continue with my definitions as they are.

(PS. I wasn't sure if I picked the right JIRA component here, I picked workflow-cps-plugin because that appears to be the github project linked from the plugin page)