class DownloadParams {
    String artifactName = ''
    def tagNames = []
    String version = ''
    def artifactoryUsername
    def artifactoryPassword
}

def call(DownloadParams args) {

    if (args.version) {
        println 'version wins'
    } else {
        println 'tagName wins'
    }
      println "artifactName: ${args.artifactName}"
      println "tagNames: ${args.tagNames}"
      println "version: ${args.version}"
      println "artifactoryUsername: ${args.artifactoryUsername}"
      println "artifactoryPassword: ${args.artifactoryPassword}"
}

def p = new DownloadParams(tagNames: ['stage-verified'], version: '1.0.0', artifactoryUsername: 'user', artifactoryPassword: 'pw')

call(p)
println '\n\n'
call(new DownloadParams(version: '1.0.0', artifactoryUsername: 'user', artifactoryPassword: 'pw'))
println '\n\n'
call(new DownloadParams(tagNames: ['dev-verified'], artifactoryUsername: 'user', artifactoryPassword: 'pw'))
println '\n\n'