@Override
	public ClangToken next() {
		ClangToken res = currentToken;
		advanceToken();
		return res;
	}
Create iterator across all tokens under the given ClangTokenGroup.  The iterator will walk the
entire tree of token groups under the given group.  The iterator will run over tokens in display
order (forward=true) or in reverse of display order (forward=false)
@param group is the given ClangTokenGroup
@param forward is true for a forward iterator, false for a backward iterator
Ghidra/Features/Decompiler/src/main/java/ghidra/app/decompiler/TokenIterator.java