Finds a font program for a font that is not embedded, or whose embedded program cannot be read.
public FontResolution? ResolveFont(FontQuery query)
What is known about the font: its name, type and font descriptor facts.
null when this resolver has none for the font.ISO 32000-2 §9.6.2.1, §9.6.2.2 and §9.8; the order is described on SystemFontResolver.