How to use jogamp.graph.font.typecast

protected TypecastGlyph(final Font font, final char symbol, final short id, final AABBox bbox, final int advance, final OutlineShape shape) {
  this.symbol = symbol;
  this.shape = shape;
  this.id = id;
  this.metrics = new Metrics(font, bbox, advance);
}

public Metrics(final Font font, final AABBox bbox, final float advance)
{
  this.bbox = bbox;
  this.advance = new Advance(font, advance);
}

public final void addAdvance(final float advance, final float size)
{
  this.advance.add(advance, size);
}

@Override
public final AABBox getBBox() {
  return this.metrics.getBBox();
}

public final float getScale(final float pixelSize)
{
  return this.advance.getScale(pixelSize);
}

@Override
public final float getAdvance(final float pixelSize, final boolean useFrationalMetrics) {
  return this.metrics.getAdvance(pixelSize, useFrationalMetrics);
}

public final float getAdvance(final float pixelSize, final boolean useFrationalMetrics)
{
  return this.advance.get(pixelSize, useFrationalMetrics);
}

@Override
public final float getScale(final float pixelSize) {
  return this.metrics.getScale(pixelSize);
}

@Override
public final Font getFont() {
  return this.metrics.getFont();
}

protected final void addAdvance(final float advance, final float size) {
  this.metrics.addAdvance(advance, size);
}

final AABBox getBBoxUnsized() {
  return this.metrics.getBBox();
}

protected TypecastGlyph(final Font font, final char symbol, final short id, final AABBox bbox, final int advance, final OutlineShape shape) {
  this.symbol = symbol;
  this.shape = shape;
  this.id = id;
  this.metrics = new Metrics(font, bbox, advance);
}

public Metrics(final Font font, final AABBox bbox, final float advance)
{
  this.bbox = bbox;
  this.advance = new Advance(font, advance);
}

public final void addAdvance(final float advance, final float size)
{
  this.advance.add(advance, size);
}

public final float getScale(final float pixelSize)
{
  return this.advance.getScale(pixelSize);
}

@Override
public final float getAdvance(final float pixelSize, final boolean useFrationalMetrics) {
  return this.metrics.getAdvance(pixelSize, useFrationalMetrics);
}

public final float getAdvance(final float pixelSize, final boolean useFrationalMetrics)
{
  return this.advance.get(pixelSize, useFrationalMetrics);
}

@Override
public final float getScale(final float pixelSize) {
  return this.metrics.getScale(pixelSize);
}

@Override
public final Font getFont() {
  return this.metrics.getFont();
}

@Override
public final AABBox getBBox() {
  return this.metrics.getBBox();
}