public java.util.Map<String, java.util.List<String>> getSubstitutions() {
        return substitutions;
    }
<p>
The message variables to use in the SMS message. You can override the default variables with individual address
variables.
</p>

@return The message variables to use in the SMS message. You can override the default variables with individual
        address variables.
aws-java-sdk-pinpoint/src/main/java/com/amazonaws/services/pinpoint/model/SMSMessage.java