[api] Adds utility method to Model for accessing properties

api/src/main/java/ai/djl/Model.java

@@ -233,6 +233,36 @@ default String getProperty(String key, String defValue) {
      */
     void setProperty(String key, String value);
 
+    /**
+     * Returns the property of the model based on property name.
+     *
+     * @param key the name of the property
+     * @param defValue the default value if key not found
+     * @return the value of the property
+     */
+    default int intProperty(String key, int defValue) {
+        String value = getProperty(key);
+        if (value == null || value.isEmpty()) {
+            return defValue;
+        }
+        return Integer.parseInt(value);
+    }
+
+    /**
+     * Returns the property of the model based on property name.
+     *
+     * @param key the name of the property
+     * @param defValue the default value if key not found
+     * @return the value of the property
+     */
+    default long longProperty(String key, long defValue) {
+        String value = getProperty(key);
+        if (value == null || value.isEmpty()) {
+            return defValue;
+        }
+        return Integer.parseInt(value);
+    }
+
     /**
      * Gets the {@link NDManager} from the model.
      *

api/src/test/java/ai/djl/translate/TranslatorTest.java

@@ -83,6 +83,10 @@ public void testBatchTranslator() throws IOException, ModelException, TranslateE
                 Predictor<Image[], Classifications[]> predictor = model.newPredictor()) {
             Classifications[] res = predictor.predict(inputs);
             Assert.assertEquals(res.length, 2);
+            int intValue = model.intProperty("something", -1);
+            Assert.assertEquals(intValue, -1);
+            long longValue = model.longProperty("something", -1L);
+            Assert.assertEquals(longValue, -1L);
         }
     }
 }