Description
Taken from a comment by Martin on ISIS-931:
While debugging ISIS-911 I've noticed that org.apache.isis.core.metamodel.layoutmetadata.json.LayoutMetadataReaderFromJson#asProperties is expensive. It is called at start time and tries to load .layout.json file for every introspected method. This includes JRE classes, JDO classes, and many more. I think it should be called only for objects/entities. The expensiveness is that it tries to find a file in the classpath and if it is not found then it throws org.apache.isis.core.metamodel.layoutmetadata.LayoutMetadataReader.ReaderException. The stacktrace of this exception is ignored at org.apache.isis.core.metamodel.specloader.specimpl.FacetedMethodsBuilder#readMetadataProperties so
ReaderException could override java.lang.Throwable#fillInStackTrace() to return null and save some time.