public java.util.List<CmafAdditionalManifest> getAdditionalManifests() {
        return additionalManifests;
    }
By default, the service creates one top-level .m3u8 HLS manifest and one top -level .mpd DASH manifest for each
CMAF output group in your job. These default manifests reference every output in the output group. To create
additional top-level manifests that reference a subset of the outputs in the output group, specify a list of them
here. For each additional manifest that you specify, the service creates one HLS manifest and one DASH manifest.

@return By default, the service creates one top-level .m3u8 HLS manifest and one top -level .mpd DASH manifest
        for each CMAF output group in your job. These default manifests reference every output in the output
        group. To create additional top-level manifests that reference a subset of the outputs in the output
        group, specify a list of them here. For each additional manifest that you specify, the service creates
        one HLS manifest and one DASH manifest.
aws-java-sdk-mediaconvert/src/main/java/com/amazonaws/services/mediaconvert/model/CmafGroupSettings.java