}

    def merge() {
        gradleManifest.attributes(key1: 'value1')
        gradleManifest.from(new DefaultManifest(fileResolver).attributes(key2: 'value2', key3: 'value3')) {
            eachEntry { details ->
                if (details.key == 'key3') {
                    details.exclude()
                }
            }
        }

Manifests are merged in the order they are declared in the `from` statement. If the base manifest and the merged manifest both define values for the same key, the merged manifest wins by default. You can fully customize the merge behavior by adding `eachEntry` actions in which you have access to a link:{javadocPath}/org/gradle/api/java/archives/ManifestMergeDetails.html[ManifestMergeDetails] instance for each entry of the resulting manifest. Note that the merge is done lazily, either when generating the...