public void setCreationDate(String creationDate) {
        this.creationDate = creationDate;
    }
<p>
The date and time, in ISO 8601 format, when the voice channel was enabled.
</p>

@param creationDate
       The date and time, in ISO 8601 format, when the voice channel was enabled.
aws-java-sdk-pinpoint/src/main/java/com/amazonaws/services/pinpoint/model/VoiceChannelResponse.java