# Class: com.pnfsoftware.jeb.core.units.code.asm.NativeCallgraphBuilder

A builder of `callgraph` \(sub\-routine caller/callee relationships\) for native code units.

## Constructor: NativeCallgraphBuilder
- parameter: `unit`, type: `com.pnfsoftware.jeb.core.units.INativeCodeUnit<com.pnfsoftware.jeb.core.units.code.IInstruction>`

Description: Create a builder.
parameter: unit: code unit

## Method: buildModel
- return type: `com.pnfsoftware.jeb.util.graph.Digraph`


## Method: getAddressForVertexId
- parameter: `vertexId`, type: `int`
- return type: `java.lang.String`


## Method: getVertexIdForAddress
- parameter: `address`, type: `java.lang.String`
- return type: `java.lang.Integer`