mocobeta commented on a change in pull request #643:
URL: https://github.com/apache/lucene/pull/643#discussion_r802821638
##########
File path: lucene/core/src/java/org/apache/lucene/util/IOUtils.java
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@@ -526,4 +526,17 @@ public static void fsync(Path fileToSync, boolean isDir)
throws IOException {
public interface IOFunction<T, R> {
R apply(T t) throws IOException;
}
+
+ /**
+ * A resource supplier function that may throw an IOException.
+ *
+ * <p>Note that this would open a resource such as a File. Consumers should
make sure to close the
+ * resource (e.g., use try-with-resources)
+ *
+ * @see java.util.function.Supplier
+ */
+ @FunctionalInterface
Review comment:
> Yes, both is fine. Actually the nested ones have a naming problem:
"IOUtils.IOSupplier" has two times IO, so either "IOSupplier" or
"IOUtils.Supplier".
Excuse me, I wrote the previous comment before seeing your comment.
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