From 98615296641c1cabc245d270fb852e1ab8c55da8 Mon Sep 17 00:00:00 2001
From: Rick Ley <frley@microsoft.com>
Date: Thu, 9 Jul 2020 14:10:50 -0700
Subject: [PATCH] Added an exception to unsupported provider methods instead of
 no-op'ing or returning null (#12977)

---
 .../storage/blob/nio/AzureFileSystemProvider.java | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/sdk/storage/azure-storage-blob-nio/src/main/java/com/azure/storage/blob/nio/AzureFileSystemProvider.java b/sdk/storage/azure-storage-blob-nio/src/main/java/com/azure/storage/blob/nio/AzureFileSystemProvider.java
index 4be316c90c83..c212b1b35c35 100644
--- a/sdk/storage/azure-storage-blob-nio/src/main/java/com/azure/storage/blob/nio/AzureFileSystemProvider.java
+++ b/sdk/storage/azure-storage-blob-nio/src/main/java/com/azure/storage/blob/nio/AzureFileSystemProvider.java
@@ -199,12 +199,13 @@ public Path getPath(URI uri) {
     }
 
     /**
+     * @throws UnsupportedOperationException Operation is not supported.
      * {@inheritDoc}
      */
     @Override
     public SeekableByteChannel newByteChannel(Path path, Set<? extends OpenOption> set,
             FileAttribute<?>... fileAttributes) throws IOException {
-        return null;
+        throw new UnsupportedOperationException();
     }
 
     /**
@@ -611,19 +612,21 @@ public void copy(Path source, Path destination, CopyOption... copyOptions) throw
     }*/
 
     /**
+     * @throws UnsupportedOperationException Operation is not supported.
      * {@inheritDoc}
      */
     @Override
     public void move(Path path, Path path1, CopyOption... copyOptions) throws IOException {
-
+        throw new UnsupportedOperationException();
     }
 
     /**
+     * @throws UnsupportedOperationException Operation is not supported.
      * {@inheritDoc}
      */
     @Override
     public boolean isSameFile(Path path, Path path1) throws IOException {
-        return false;
+        throw new UnsupportedOperationException();
     }
 
     /**
@@ -635,19 +638,21 @@ public boolean isHidden(Path path) throws IOException {
     }
 
     /**
+     * @throws UnsupportedOperationException Operation is not supported.
      * {@inheritDoc}
      */
     @Override
     public FileStore getFileStore(Path path) throws IOException {
-        return null;
+        throw new UnsupportedOperationException();
     }
 
     /**
+     * @throws UnsupportedOperationException Operation is not supported.
      * {@inheritDoc}
      */
     @Override
     public void checkAccess(Path path, AccessMode... accessModes) throws IOException {
-
+        throw new UnsupportedOperationException();
     }
 
     /**