@Override
		public Field next() throws IOException {
			if (hasNext()) {
				lastKey = key;
				hasNext = false;
				return key.getPrimaryKey();
			}
			throw new NoSuchElementException();
		}
If min or max index values was truncated, a comparison of the actual
indexed field value (i.e., primary table value) is done with the min and/or max values.
@param f index field from index table iterator
@return true if field value corresponding to f is outside the min/max range.
It is assumed that the underlying table iterator will not return index values
out of range which do not have the same truncated index value.
@throws IOException thrown if IO error occurs
Ghidra/Framework/DB/src/main/java/db/FieldIndexTable.java