@Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("{");
        if (getAuthentication() != null)
            sb.append("Authentication: ").append(getAuthentication()).append(",");
        if (getClientToken() != null)
            sb.append("ClientToken: ").append(getClientToken()).append(",");
        if (getRelayName() != null)
            sb.append("RelayName: ").append(getRelayName()).append(",");
        if (getServerName() != null)
            sb.append("ServerName: ").append(getServerName()).append(",");
        if (getServerPort() != null)
            sb.append("ServerPort: ").append(getServerPort()).append(",");
        if (getTags() != null)
            sb.append("Tags: ").append(getTags());
        sb.append("}");
        return sb.toString();
    }
Returns a string representation of this object. This is useful for testing and debugging. Sensitive data will be
redacted from this string using a placeholder value.

@return A string representation of this object.

@see java.lang.Object#toString()
aws-java-sdk-mailmanager/src/main/java/com/amazonaws/services/mailmanager/model/CreateRelayRequest.java