lambdaQuerybetweenparamgetStatTimeBetween!= nullTaskgetStartTimeparamgetStatTimeBetweenget0paramgetStatTimeBetweenget1

This code snippet is using the lambdaQuery() method to create a query and then applying the between() method to filter the results based on a condition.

The condition being checked is whether the param.getStatTimeBetween() value is not null. If it is not null, then the between() method is applied to filter the results based on the Task::getStartTime property. The start time range is determined by the values at index 0 and index 1 of the param.getStatTimeBetween() list.

In summary, this code is filtering the query results based on a range of start time values specified in the param.getStatTimeBetween() list, if it is not null