public void setLastModifiedUser(String lastModifiedUser) {
        this.lastModifiedUser = lastModifiedUser;
    }
<p>
The Amazon Resource Name (ARN) of the user who made the most recent changes to the approval rule.
</p>

@param lastModifiedUser
       The Amazon Resource Name (ARN) of the user who made the most recent changes to the approval rule.
aws-java-sdk-codecommit/src/main/java/com/amazonaws/services/codecommit/model/ApprovalRule.java