Is there a way to preprocess the data that came from a previous step to show, e.g. on a comboBox for user selection. i will be grateful if you give me an example to process that data on the Dialog class instance.

PD: to get the previous step i use

List<StreamInterface> infoStreams = meta.getStepIOMeta().getInfoStreams();
StepMeta stepMeta = infoStreams.get( 0 ).getStepMeta();
Thanks in advance