public void setManual(Boolean manual) {
        this.manual = manual;
    }
<p>
Indicates whether to apply the snapshot retention period to newly copied manual snapshots instead of automated
snapshots.
</p>

@param manual
       Indicates whether to apply the snapshot retention period to newly copied manual snapshots instead of
       automated snapshots.
aws-java-sdk-redshift/src/main/java/com/amazonaws/services/redshift/model/ModifySnapshotCopyRetentionPeriodRequest.java