public void setLastSeen(java.util.Date lastSeen) {
        this.lastSeen = lastSeen;
    }
<p>
The most recent date and time, in UTC and extended ISO 8601 format, when the specified operation (api) was
invoked and produced the finding.
</p>

@param lastSeen
       The most recent date and time, in UTC and extended ISO 8601 format, when the specified operation (api) was
       invoked and produced the finding.
aws-java-sdk-macie2/src/main/java/com/amazonaws/services/macie2/model/ApiCallDetails.java