GitUtil: Use java.util.Optional
Change-Id: I7b1f00bfd3ebc9c4c0b23db755cb73ed28165dbe
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@@ -22,7 +22,6 @@ import static com.google.gerrit.reviewdb.client.Patch.MERGE_LIST;
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import static com.google.gerrit.server.group.SystemGroupBackend.REGISTERED_USERS;
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import static org.eclipse.jgit.lib.Constants.HEAD;
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import com.google.common.base.Optional;
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import com.google.common.base.Strings;
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import com.google.common.collect.ImmutableList;
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import com.google.common.collect.ImmutableMap;
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@@ -144,6 +143,7 @@ import java.util.EnumSet;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Optional;
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import java.util.regex.Pattern;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipFile;
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