(i) A defendant, in the court's discretion, may be required to serve all or any portion of a term of imprisonment to which the defendant has been sentenced pursuant to this section in a residential alcoholism treatment program or a residential drug abuse treatment program. Any time spent in such a program must be credited by the court toward the term of imprisonment.
For the purposes of this section, any conviction for a violation of s. 316.193, a previous conviction for the violation of former s. 316.1931, former s. 860.01, or former s. 316.028, or a previous conviction outside this state for driving under the influence, driving while intoxicated, driving with an unlawful blood-alcohol level, driving with an unlawful breath-alcohol level, or any other similar alcohol-related or drug-related traffic offense, is also considered a previous conviction for violation of this section.