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

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