@Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("{");
        if (getExpression() != null)
            sb.append("Expression: ").append(getExpression()).append(",");
        if (getVariables() != null)
            sb.append("Variables: ").append(getVariables()).append(",");
        if (getProcessingConfig() != null)
            sb.append("ProcessingConfig: ").append(getProcessingConfig());
        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-iotsitewise/src/main/java/com/amazonaws/services/iotsitewise/model/Transform.java