public char next() {
		debugCheck(1);
		return iter.next();
	}
Increments the current index by one and returns the character at the new
index. If the resulting index is greater or equal to the end index, the
current index is reset to the end index and a value of DONE is returned.
For extended reasons, the user should try not to use this method--and use
of it should be selective, based on extended class reasons.

@return the character at the new position or DONE
Ghidra/Features/MicrosoftDmang/src/main/java/mdemangler/MDMang.java