Running Ant buildfiles
  To run an Ant buildfile in the Workbench:
  
    - In one of the navigation views, select an XML file.
- From the file's pop-up menu, select Run Ant.... The launch configuration dialog opens.
- Select one or more targets from the Targets tab. The order in which you select the items is the order in
    which they will run. The order is displayed in the Target execution order box at the bottom of the tab. You
    can change the order of the targets by clicking the Order... button.
- (Optional) Configure options on the other tabs. For example, on the Main tab, type any required
    arguments in the Arguments field.
- Click Run.
The Ant buildfile will run on the selected targets. Unless you disabled the Capture output option on the
  Main tab, the console displays any applicable execution results as the buildfile runs.
  These steps create a persisted launch configuration. The newly created configuration will appear in the launch
  history under Run > External Tools and will be available in the launch configuration dialog which is opened
  by clicking  Run > External Tools > External
  Tools....
 Run > External Tools > External
  Tools....
  Ant support
  Builds
  External tools
  Running external tools
  Modifying the Ant classpath
  Using a different version of Ant
  Adding new Ant tasks and types