public void setLastModifiedDate(java.util.Date lastModifiedDate) {
        this.lastModifiedDate = lastModifiedDate;
    }
Date on which the identity was last modified.

@param lastModifiedDate
       Date on which the identity was last modified.
aws-java-sdk-cognitosync/src/main/java/com/amazonaws/services/cognitosync/model/IdentityUsage.java