public TemplateVersionResponse withDefaultSubstitutions(String defaultSubstitutions) {
        setDefaultSubstitutions(defaultSubstitutions);
        return this;
    }
<p>
A JSON object that specifies the default values that are used for message variables in the version of the message
template. This object is a set of key-value pairs. Each key defines a message variable in the template. The
corresponding value defines the default value for that variable.
</p>

@param defaultSubstitutions
       A JSON object that specifies the default values that are used for message variables in the version of the
       message template. This object is a set of key-value pairs. Each key defines a message variable in the
       template. The corresponding value defines the default value for that variable.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-pinpoint/src/main/java/com/amazonaws/services/pinpoint/model/TemplateVersionResponse.java