QAssociativeIterable and friends. Syncqt processes each class declarator line by line to extract the class name. If the class declaration spans multiple lines, syncqt fails to recognize the class name and does not generate the corresponding class forwarding header. Similarly, syncqt can't parse the ':' char in the QT_CORE_DEPRECATED_EXPORT_VERSION_X_6_15 macro call, ending up considering the e.g. 'QMetaAssociation' the class name. Change the multi-line class declarations into single lines, and rephrase the deprecation message not to use '::'. Amends 8b246f262346ded7860ad76fdedc8d59f037a374 Pick-to: 6.11 Fixes: QTBUG-142910 Change-Id: I24e0aeab054e39c87803d6144e0b8573ae770a91 Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>