.jsai_results() extracts specific variables of the model of the SA-item while
.jsai_jresults() extracts the Java object of the results of a SA-item.
Arguments
- jsai
- Java SA-item object. 
- items
- vector of characters containing the variables to extract. See - rjd3x13::x13_dictionary()or- rjd3tramoseats::tramoseats_dictionary(). By default, extracts all the possible variables.