fBuildPathsBlock= new BuildPathsBlock(new BusyIndicatorRunnableContext(), listener, 0); fBuildPathsBlock.useNewSourcePage();
fBuildPathsBlock= new BuildPathsBlock(new BusyIndicatorRunnableContext(), listener, 0, useNewSourcePage());
    private BuildPathsBlock getBuildPathsBlock() {        if (fBuildPathsBlock == null) {            IStatusChangeListener listener= new IStatusChangeListener() {                public void statusChanged(IStatus status) {                    updateStatus(status);                }            };            fBuildPathsBlock= new BuildPathsBlock(new BusyIndicatorRunnableContext(), listener, 0);            fBuildPathsBlock.useNewSourcePage();        }        return fBuildPathsBlock;    }