Gradle 6.0 deprecation warning for JacocoReport configuration

Question

The following Gradle task, which configures JacocoReportBase:

task jacocoRootReport(type: JacocoReport) {
    ...
    sourceDirectories = files(subprojects.sourceSets.main.allSource.srcDirs)
    additionalSourceDirs = files(subprojects.sourceSets.main.allSource.srcDirs)
    classDirectories = files(subprojects.sourceSets.main.output)
    executionData = files(subprojects.jacocoTestReport.executionData)
    ...
}

produces these warnings, when building with ./gradlew assembleDebug --warning-mode all:

The JacocoReportBase.setSourceDirectories(FileCollection) method has been deprecated.
This is scheduled to be removed in Gradle 6.0. Use getSourceDirectories().from(...)
at tasks_1p10s36ydq4k8rroeiucekewi$_run_closure6.doCall(.../tasks.gradle:152)

The JacocoReportBase.setAdditionalSourceDirs(FileCollection) method has been deprecated.
This is scheduled to be removed in Gradle 6.0. Use getAdditionalSourceDirs().from(...)
at tasks_1p10s36ydq4k8rroeiucekewi$_run_closure6.doCall(.../tasks.gradle:151)

The JacocoReportBase.setClassDirectories(FileCollection) method has been deprecated.
This is scheduled to be removed in Gradle 6.0. Use getClassDirectories().from(...)
at tasks_1p10s36ydq4k8rroeiucekewi$_run_closure6.doCall(.../tasks.gradle:153)

The JacocoReportBase.setExecutionData(FileCollection) method has been deprecated.
This is scheduled to be removed in Gradle 6.0. Use getExecutionData().from(...)
at tasks_1p10s36ydq4k8rroeiucekewi$_run_closure6.doCall(.../tasks.gradle:154)

How to use the Gradle 6.0 compatible syntax (as the deprecation warning suggests) to apply the desired values with these methods (passing the argument in brackets somehow does not work):

• getAdditionalSourceDirs().from(...)
• getSourceDirectories().from(...)
• getClassDirectories().from(...)
• getExecutionData().from(...) ?

Answer 1

Setter .from can be used alike this:

task jacocoRootReport(type: JacocoReport) {
    ...
    sourceDirectories.from = subprojects.sourceSets.main.allSource.srcDirs
    additionalSourceDirs.from = subprojects.sourceSets.main.allSource.srcDirs
    classDirectories.from = subprojects.sourceSets.main.output
    executionData.from = subprojects.jacocoTestReport.executionData
    ...
}