No signature of method: webserver.ReportingService.fillHeader() is applicable for argument types: (java.util.ArrayList)

[ricardoul]

Hello I´m facing the issue when running that sample code

package webserver

import pl.touk.excel.export.*

class ReportingService {

static transactional = false
def caseReport(cases){
    def caseList = cases
    def withProperties2 = ['id']

    new XlsxExporter('/tmp/report5.xlsx').with {
        fillHeader(withProperties2)
        add(caseList, withProperties2)
        save()  
    }
}

}
The error is:
groovy.lang.MissingMethodException: No signature of method: webserver.ReportingService.fillHeader() is applicable for argument types: (java.util.ArrayList) values: [[id]]
at webserver.ReportingService$_caseReport_closure1$$EP09jwx6.doCall(ReportingService.groovy:17)
at webserver.ReportingService$$EP09jwx6.caseReport(ReportingService.groovy:16)
at webserver.ReportingService$$EP09jwx6.generateCaseReport(ReportingService.groovy:34)
at webserver.ReportingServiceTests.testSearchCasesReport(ReportingServiceTests.groovy:26)

My BuildConfig:
grails.project.dependency.resolution = {
// inherit Grails' default dependencies
inherits "global", {
excludes 'xercesImpl', 'xml-apis', 'xerces'
}

plugins {
runtime ":hibernate:$grailsVersion"
runtime ":jquery:1.8.3"
runtime ":resources:1.2"

    // Uncomment these (or add new ones) to enable additional resources capabilities
    //runtime ":zipped-resources:1.0"
    //runtime ":cached-resources:1.0"
    //runtime ":yui-minify-resources:0.1.5"
    runtime ":excel-export:0.2.1"
    build ":tomcat:$grailsVersion"

}