public List<Completion> getCandidates() {
      return candidates;
    }
@param <T> the type of command class
@param instance an instance of the command class
@param command the command to execute
@return a {@link CommandResult}
@deprecated use {@link #executeAndAssertThat(Object, String)} instead
geode-junit/src/main/java/org/apache/geode/test/junit/rules/GfshParserRule.java