public boolean containsFont(String id) {
		return fontMap.containsKey(id);
	}
Returns true if a {@link FontValue} exists in this map for the given id.
@param id the id to check
@return true if a {@link FontValue} exists in this map for the given id
Ghidra/Framework/Gui/src/main/java/generic/theme/GThemeValueMap.java