returns a license key if one was provided , or null if not . concode_field_sep String iText concode_elem_sep String release concode_elem_sep String key concode_elem_sep Version version concode_elem_sep String iTextVersion concode_field_sep String getVersion concode_elem_sep String getProduct concode_elem_sep Version getInstance concode_elem_sep String getRelease
String function ( ) { return key ; }