private int getByteIndexInToken(int col) {
		if (col >= byteGroupSize * CHARS_IN_BYTE) {
			return byteGroupSize - 1;
		}
		return col / CHARS_IN_BYTE;
	}
Computes how many bytes the given column position represents. Normally this is just the
column position / 2 (since each byte consists of two chars).  There is a special case when
the col position is just past the last char of the token.  In this case, we want to return
the number of bytes in a token - 1;
Ghidra/Features/Base/src/main/java/ghidra/app/util/viewer/field/BytesFieldFactory.java