add doInitialization() to Runner

Signed-off-by: Ryan Nett <[email protected]>

Author: rnett

tensorflow-core/tensorflow-core-api/src/main/java/org/tensorflow/Session.java

@@ -293,6 +293,16 @@ public Runner addTarget(Op op) {
       return addTarget(op.op());
     }
 
+    /**
+     * Make {@link #run} execute the graph's initializers.
+     *
+     * @return this session runner
+     */
+    public Runner doInitialization(){
+      graph.initializers().forEach(this::addTarget);
+      return this;
+    }
+
     /**
      * Set options (typically for debugging) for this run.
      *