[infrastructure] add external null-annotations (#8848)
Signed-off-by: Jan N. Klug <jan.n.klug@rub.de>
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@@ -14,10 +14,7 @@ package org.openhab.transform.map.internal;
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import static org.junit.jupiter.api.Assertions.*;
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import java.io.File;
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import java.io.FileReader;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.*;
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import java.util.Locale;
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import java.util.Properties;
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import java.util.concurrent.Callable;
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@@ -125,7 +122,10 @@ public class MapTransformationServiceTest {
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}
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}, 10000, 100);
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} catch (IOException e1) {
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e1.printStackTrace(System.err);
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PrintStream err = System.err;
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if (err != null) {
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e1.printStackTrace(err);
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}
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}
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// Checks that an unknown input in an existing file give the expected
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