public String getMemberArn() {
        return this.memberArn;
    }
<p>
The <code>AppInstanceUserArn</code> of the member that the service couldn't add.
</p>

@return The <code>AppInstanceUserArn</code> of the member that the service couldn't add.
aws-java-sdk-chimesdkmessaging/src/main/java/com/amazonaws/services/chimesdkmessaging/model/BatchCreateChannelMembershipError.java