Please review a simple change for `SnippetUtils` to throw a checked exception if a snippet cannot be found.
------------- Commit messages: - JDK-8287337: SnippetUtils should throw exceptions if snippets not found Changes: https://git.openjdk.java.net/jdk/pull/8892/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8892&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8287337 Stats: 41 lines in 2 files changed: 31 ins; 6 del; 4 mod Patch: https://git.openjdk.java.net/jdk/pull/8892.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/8892/head:pull/8892 PR: https://git.openjdk.java.net/jdk/pull/8892