cmake_language(DEFER ID message0 CALL message STATUS "First Deferred Message")
cmake_language(DEFER ID getCallIds1 CALL cmake_language DEFER GET_CALL_IDS ids)
cmake_language(DEFER ID messageIds1 CALL cmake_language EVAL CODE [[message(STATUS "Deferred Message: ids='${ids}'")]])
cmake_language(DEFER ID cancelCall CALL cmake_language DEFER CANCEL_CALL toBeCancelled)
cmake_language(DEFER ID getCallIds2 CALL cmake_language DEFER GET_CALL_IDS ids)
cmake_language(DEFER ID messageIds2 CALL cmake_language EVAL CODE [[message(STATUS "Deferred Message: ids='${ids}'")]])
cmake_language(DEFER ID toBeCancelled CALL message STATUS "Canceled Message")
cmake_language(DEFER ID message3 CALL message STATUS "Final Deferred Message")
cmake_language(DEFER GET_CALL_IDS ids)
message(STATUS "Immediate Message: ids='${ids}'")
foreach(id ${ids})
  cmake_language(DEFER GET_CALL ${id} call)
  message(STATUS "Immediate Message: ${id}='${call}'")
endforeach()