Which method mapped a character code to Unicode text.
public enum UnicodeSource
ISO 32000-2 §9.10.2 lists the methods in priority order: ToUnicode, GlyphName (simple fonts), CidCollection (composite fonts of a known character collection). When they all fail "there is no way to determine what the character code represents"; Broadside then tries the font program's own Unicode "cmap" table (FontProgram, beyond the specification, as PDFBox does) before giving up (Unmapped).
kind:method, kind:property, kind:ctor. Press Esc to clear.CidCollectionThe code's CID through the Registry-Ordering-UCS2 table of the font's character collection (§9.10.2).FontProgramThe glyph's code point in a Unicode "cmap" subtable of the embedded TrueType or OpenType program.GlyphNameThe glyph name the simple font's encoding gives the code, through the Adobe Glyph List (§9.10.2, §9.6.5).ToUnicodeThe font's ToUnicode CMap (§9.10.3).UnmappedNo method gave a value; the text is U+FFFD REPLACEMENT CHARACTER.