node {
   checkout scm: [$class: 'IntegritySCM']
}

java.lang.IllegalStateException: cannot call getRootUrlFromRequest from outside a request handling thread
at jenkins.model.Jenkins.getRootUrlFromRequest(Jenkins.java:2366)
at hudson.scm.IntegritySCM.<init>(IntegritySCM.java:113)
Caused: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at org.jenkinsci.plugins.structs.describable.DescribableModel.instantiate(DescribableModel.java:260)
Caused: java.lang.IllegalArgumentException: Could not instantiate {serverConfig=d917f329-9826-4ffa-8bbd-de68271c4abd}
for IntegritySCM(browser: IntegrityRepositoryBrowser{IntegrityWebUI(url: String)}, serverConfig: String, userName: String, password: String, configPath: String, includeList: String,
excludeList: String, cleanCopy: boolean, lineTerminator: String, validCheckpoint: boolean, freezeMembers: boolean, noCheckout: boolean,
restoreTimestamp: boolean, skipAuthorInfo: boolean, checkpointBeforeBuild: boolean, checkpointLabel: String,
alternateWorkspace: String, fetchChangedWorkspaceFiles: boolean, deleteNonMembers: boolean, checkoutThreadPoolSize: int, configurationName: String)

checkout scm: [$class: 'MercurialSCM', 'source': '....', clean: true...]