Concatenate files - echo results but no files

The split_string_into_string_list_by_regular_expresson outputs an empty list since the string to be split is defaulted to ''. As there are no input values, the create_and_populate_temporary_file generates an empty list.

The create_temporary_file beanshell creates a file to which the concatentation can be written.

The concatenate_files service does not write anything to the temporary output file. Because the displayresults port has been given a default value of 'true', the empty string is also copied to the results port of concatenate_files.

The temporary file to which the results were written is read by the read_text_file service and its contents output.

Both of the workflow outputs contain '' i.e. the empty string.