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Text justification implemented in #3 will not work if using UNICODE fonts.
The reason is that Tw parameter (word spacing) is ignored for non simple fonts as defined in pdf standard at https://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/PDF32000_2008.pdf#651 page 253.
Therefore I reused the code from old iText output device which solved this problem.