jenkins declarative pipeline in place sort

gistfile1.txt

@NonCPS
def nonCpsTest() {
    def list = [
        ['CreationDate': '200'],
        ['CreationDate': '300'],
        ['CreationDate': '100'],
    ]
    
    def rval = list.sort true, { it['CreationDate'] }
    
    echo "Rval=$rval"
    echo "List=$list"  
}
                
pipeline {
    agent any
    stages {
        stage('default'){
            steps {
               
                script {
                   
                   nonCpsTest()
                }
            }
        }
    }
}