Cross Reference: /frameworks/base/packages/DocumentsUI/src/com/android/documentsui/model

`Name`	`Date`	`Size`
Up to higher level directory
`DocumentInfo.java`	23-Apr-2015	`10K`
`DocumentStack.java`	23-Apr-2015	`4.2K`
`Durable.java`	23-Apr-2015	`934`
`DurableUtils.java`	23-Apr-2015	`3.1K`
`RootInfo.java`	23-Apr-2015	`8.2K`