Polish
See gh-30695
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@@ -18,6 +18,7 @@ package org.springframework.boot.devtools.env;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Properties;
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@@ -74,7 +75,7 @@ public class DevToolsPropertyDefaultsPostProcessor implements EnvironmentPostPro
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for (String name : properties.stringPropertyNames()) {
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map.put(name, properties.getProperty(name));
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}
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PROPERTIES = map;
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PROPERTIES = Collections.unmodifiableMap(map);
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}
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@Override
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