PatternErrorRecovery.java:12:18: compiler.err.feature.not.supported.in.source.plural: (compiler.misc.feature.pattern.switch), 20, 21
PatternErrorRecovery.java:17:19: compiler.err.feature.not.supported.in.source.plural: (compiler.misc.feature.deconstruction.patterns), 20, 21
PatternErrorRecovery.java:17:27: compiler.err.illegal.start.of.type
PatternErrorRecovery.java:11:18: compiler.err.pattern.expected
4 errors