Jenkins currentBuild getChangeLog as a string

getChangeLog

@NonCPS
def getChangeLog(currentBuild) {
    def changeLogSets = currentBuild.changeSets
    def changeLogToReturn = ''
    currentBuild
        .changeSets
        .each { changeLogSet ->
            changeLogSet.items.each { changeSet ->
                def commmitDate = new Date().format("EEE MMM dd yy HH:mm:ss", TimeZone.getTimeZone('GMT+5:30'))
                changeLogToReturn += "<${changeLogSet.browser.repoUrl}commit/${changeSet.commitId}|${changeSet.msg}> by ${changeSet.author} on ${commmitDate}, commit details below\n"
                changeSet.affectedFiles.each { file ->
                    changeLogToReturn += "    ${file.editType.name.capitalize()} - ${file.path}\n"
                }
            }
        }
    return changeLogToReturn;
}