@Override
        public void dispose () {
            if (stroker != null) stroker.dispose();
            if (packer != null) packer.dispose();
        }
{@link BitmapFontData} used for fonts generated via the {@link FreeTypeFontGenerator}. The texture storing the glyphs is
held in memory, thus the {@link #getImagePaths()} and {@link #getFontFile()} methods will return null.
@author mzechner
@author Nathan Sweet
core/src/com/badlogic/gdx/graphics/g2d/freetype/FreeTypeFontGenerator.java