presto-main/src/main/java/io/prestosql/execution/TaskManagerConfig.java/TaskManagerConfig/setMaxPagePartitioningBufferSize
class TaskManagerConfig:    @Config("driver.max-page-partitioning-buffer-size")
    public TaskManagerConfig setMaxPagePartitioningBufferSize(DataSize size)
    {
        this.maxPagePartitioningBufferSize = size;
        return this;
    }