public java.util.Map<String, MessageAttributeValue> getMessageAttributes() {
        if (messageAttributes == null) {
            messageAttributes = new com.amazonaws.internal.SdkInternalMap<String, MessageAttributeValue>();
        }
        return messageAttributes;
    }
<p>
Each message attribute consists of a <code>Name</code>, <code>Type</code>, and <code>Value</code>. For more
information, see <a href="https://docs.aws.amazon.com/sns/latest/dg/sns-message-attributes.html">Amazon SNS
message attributes</a> in the Amazon SNS Developer Guide.
</p>

@return Each message attribute consists of a <code>Name</code>, <code>Type</code>, and <code>Value</code>. For
        more information, see <a
        href="https://docs.aws.amazon.com/sns/latest/dg/sns-message-attributes.html">Amazon SNS message
        attributes</a> in the Amazon SNS Developer Guide.
aws-java-sdk-sns/src/main/java/com/amazonaws/services/sns/model/PublishBatchRequestEntry.java