# Class: com.pnfsoftware.jeb.core.output.tree.impl.StaticTreeDocument
- Super class: `com.pnfsoftware.jeb.core.output.tree.impl.AbstractTreeDocument`

A simple tree document. Such tree document objects do not listen to unit changes events; in fact,  they are unaware of the [IUnit](com.pnfsoftware.jeb.core.units.IUnit.md) family of classes. They are ideal to distribute static,  immutable contents.  

  Clients should not extend this class. Clients requiring custom tree documents should either  extend [AbstractTreeDocument](com.pnfsoftware.jeb.core.output.tree.impl.AbstractTreeDocument.md) or implement [ITreeDocument](com.pnfsoftware.jeb.core.output.tree.ITreeDocument.md).

## Constructor: StaticTreeDocument
- parameter: `root`, type: `com.pnfsoftware.jeb.core.output.tree.INode`

Description: Create a single\-root static tree document.
parameter: root: tree root

## Constructor: StaticTreeDocument
- parameter: `roots`, type: `java.util.List<? extends com.pnfsoftware.jeb.core.output.tree.INode>`

Description: Create a static tree document.
parameter: roots: tree roots

## Constructor: StaticTreeDocument
- parameter: `roots`, type: `java.util.List<? extends com.pnfsoftware.jeb.core.output.tree.INode>`
- parameter: `columnLabels`, type: `java.util.List<java.lang.String>`
- parameter: `initialExpansionLevel`, type: `int`

Description: Create a static tree or table\-tree document.
parameter: roots: tree roots
parameter: columnLabels: optional column labels for table trees
parameter: initialExpansionLevel: suggested initial expansion level for clients

## Method: getColumnLabels
- return type: `java.util.List<java.lang.String>`


## Method: getInitialExpansionLevel
- return type: `int`


## Method: getRoots
- return type: `java.util.List<? extends com.pnfsoftware.jeb.core.output.tree.INode>`