PrefService: move get(Class, String) to interface

Author: ctrueden

src/main/java/org/scijava/prefs/DefaultPrefService.java

@@ -58,11 +58,6 @@ public class DefaultPrefService extends AbstractPrefService {
 	@Parameter(required = false)
 	private LogService log;
 
-	@Override
-	public String get(final Class<?> c, final String name) {
-		return get(c, name, null);
-	}
-
 	@Override
 	public String get(final Class<?> c, final String name,
 		final String defaultValue)

src/main/java/org/scijava/prefs/PrefService.java

@@ -45,7 +45,9 @@
  */
 public interface PrefService extends SciJavaService {
 
-	String get(Class<?> c, String name);
+	default String get(final Class<?> c, final String name) {
+		return get(c, name, null);
+	}
 
 	String get(Class<?> c, String name, String defaultValue);