rename output with mapping

output.gralde

    applicationVariants.all { variant ->
        //def file = variant.outputFile
        if (variant.buildType.name == "release") {
            variant.outputs.each { output ->
                //println ">> outputFile for " + variant.buildType.name + " = " + output.outputFile
                output.outputFile = new File(projectDir.parent + "/../builds", archivesBaseName + "-" + versionName + ".apk")
            }
        } else if (variant.buildType.name == "kindle") {
            variant.outputs.each { output ->
                //println ">> outputFile for " + variant.buildType.name + " = " + output.outputFile
                output.outputFile = new File(projectDir.parent + "/../builds", "Kindle-" + versionName + ".apk")
            }
        } else if (variant.buildType.name != "debug") {
            variant.outputs.each { output ->
                //println ">> outputFile for " + variant.buildType.name + " = " + output.outputFile
                output.outputFile = new File(projectDir.parent + "/../builds", archivesBaseName + "-" + variant.buildType.name + versionCode + ".apk")
            }
            //println "variant name=" +variant.buildType.name+" : " + variant.outputFile+" / " + variant.dirName+" / " + variant.baseName + "\n"
        }

        def usesProguard = false
        if (!variant.buildType.properties.findAll{it.key == 'runProguard'}.isEmpty()) {
            usesProguard = variant.buildType.runProguard
        } else if (!variant.buildType.properties.findAll{it.key == 'minifyEnabled'}.isEmpty()) {
            usesProguard = variant.buildType.minifyEnabled
        }
        //println "buildType " + variant.buildType.name + " uses Proguard = " + usesProguard

        if (usesProguard) {
            //println "detected Proguard in " + variant.buildType.name
            variant.assemble.doLast {
            def mappingSource = new File(projectDir, "build/outputs/mapping/" + variant.buildType.name + "/mapping.txt")
            def mappingDest = new File(variant.outputs.get(0).outputFile.parent)
            description "ProGuard mapping copy"
            println "ProGuard mapping copy " + mappingSource + " to " + mappingDest
            copy {
            from mappingSource
            into mappingDest
            rename { String fileName ->
                fileName.replace('mapping.txt', variant.outputs.get(0).outputFile.name.replace(".apk", "-mapping.txt"))
            }
           }
          }
       }
    }