Location: add getName() method

The name returned is meant as an analogue to a file name
and might be used for meta-data purposes.

Signed-off-by: Curtis Rueden <ctrueden@wisc.edu>

Author: Gabriel Einsdorf

src/main/java/org/scijava/io/Location.java

@@ -46,6 +46,7 @@
  * </p>
  * 
  * @author Curtis Rueden
+ * @author Gabriel Einsdorf
  */
 public interface Location {
 
@@ -57,4 +58,13 @@ default URI getURI() {
 		return null;
 	}
 
+	/**
+	 * Gets the name of the object addressed by this location, or an empty string
+	 * if it has no name.
+	 */
+	default String getName() {
+		final URI uri = getURI();
+		return uri == null ? "" : uri.toString();
+	}
+
 }