public void clearPrimaryHighlights() {
		Consumer<ClangToken> clearAll = token -> {
			token.setMatchingToken(false);
			updateHighlightColor(token);
		};

		doClearHighlights(contextHighlightTokens, clearAll);
		notifyListeners();
	}
Return the current highlighted token (if exists and unique)
@return token or null
Ghidra/Features/Decompiler/src/main/java/ghidra/app/decompiler/component/ClangHighlightController.java