@Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("{");
        if (getArn() != null)
            sb.append("Arn: ").append(getArn()).append(",");
        if (getStatus() != null)
            sb.append("Status: ").append(getStatus()).append(",");
        if (getCreated() != null)
            sb.append("Created: ").append(getCreated()).append(",");
        if (getEnded() != null)
            sb.append("Ended: ").append(getEnded()).append(",");
        if (getBillingMinutes() != null)
            sb.append("BillingMinutes: ").append(getBillingMinutes()).append(",");
        if (getSeleniumProperties() != null)
            sb.append("SeleniumProperties: ").append(getSeleniumProperties());
        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-devicefarm/src/main/java/com/amazonaws/services/devicefarm/model/TestGridSession.java