diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php b/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php
index e4501f8..a1151bb 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php
@@ -1158,7 +1158,7 @@ function advanced_render($values) {
     }
 
     if (empty($this->last_render)) {
-      if ($this->is_value_empty($this->last_render, $this->options['empty_zero'], FALSE)) {
+      if ($this->isValueEmpty($this->last_render, $this->options['empty_zero'], FALSE)) {
         $alter = $this->options['alter'];
         $alter['alter_text'] = 1;
         $alter['text'] = $this->options['empty'];
@@ -1183,7 +1183,7 @@ function advanced_render($values) {
    * @return bool
    * TRUE if the value is considered empty, FALSE otherwise.
    */
-  function is_value_empty($value, $empty_zero, $no_skip_empty = TRUE) {
+  public function isValueEmpty($value, $empty_zero, $no_skip_empty = TRUE) {
     if (!isset($value)) {
       $empty = TRUE;
     }
@@ -1216,14 +1216,14 @@ public function renderText($alter) {
     }
 
     // Check if there should be no further rewrite for empty values.
-    $no_rewrite_for_empty = $this->options['hide_alter_empty'] && $this->is_value_empty($this->original_value, $this->options['empty_zero']);
+    $no_rewrite_for_empty = $this->options['hide_alter_empty'] && $this->isValueEmpty($this->original_value, $this->options['empty_zero']);
 
     // Check whether the value is empty and return nothing, so the field isn't rendered.
     // First check whether the field should be hidden if the value(hide_alter_empty = TRUE) /the rewrite is empty (hide_alter_empty = FALSE).
     // For numeric values you can specify whether "0"/0 should be empty.
     if ((($this->options['hide_empty'] && empty($value))
         || ($alter['phase'] != VIEWS_HANDLER_RENDER_TEXT_PHASE_EMPTY && $no_rewrite_for_empty))
-      && $this->is_value_empty($value, $this->options['empty_zero'], FALSE)) {
+      && $this->isValueEmpty($value, $this->options['empty_zero'], FALSE)) {
       return '';
     }
     // Only in empty phase.
diff --git a/core/modules/views/lib/Drupal/views/Tests/Handler/FieldUnitTest.php b/core/modules/views/lib/Drupal/views/Tests/Handler/FieldUnitTest.php
index d5f2eac..ade96a9 100644
--- a/core/modules/views/lib/Drupal/views/Tests/Handler/FieldUnitTest.php
+++ b/core/modules/views/lib/Drupal/views/Tests/Handler/FieldUnitTest.php
@@ -499,25 +499,25 @@ function _testEmptyText() {
   }
 
   /**
-   * Tests views_handler_field::is_value_empty().
+   * Tests views_handler_field::isValueEmpty().
    */
   function testIsValueEmpty() {
     $view = views_get_view('test_view');
     $view->initHandlers();
     $field = $view->field['name'];
 
-    $this->assertFalse($field->is_value_empty("not empty", TRUE), 'A normal string is not empty.');
-    $this->assertTrue($field->is_value_empty("not empty", TRUE, FALSE), 'A normal string which skips empty() can be seen as empty.');
+    $this->assertFalse($field->isValueEmpty("not empty", TRUE), 'A normal string is not empty.');
+    $this->assertTrue($field->isValueEmpty("not empty", TRUE, FALSE), 'A normal string which skips empty() can be seen as empty.');
 
-    $this->assertTrue($field->is_value_empty("", TRUE), '"" is considered as empty.');
+    $this->assertTrue($field->isValueEmpty("", TRUE), '"" is considered as empty.');
 
-    $this->assertTrue($field->is_value_empty('0', TRUE), '"0" is considered as empty if empty_zero is TRUE.');
-    $this->assertTrue($field->is_value_empty(0, TRUE), '0 is considered as empty if empty_zero is TRUE.');
-    $this->assertFalse($field->is_value_empty('0', FALSE), '"0" is considered not as empty if empty_zero is FALSE.');
-    $this->assertFalse($field->is_value_empty(0, FALSE), '0 is considered not as empty if empty_zero is FALSE.');
+    $this->assertTrue($field->isValueEmpty('0', TRUE), '"0" is considered as empty if empty_zero is TRUE.');
+    $this->assertTrue($field->isValueEmpty(0, TRUE), '0 is considered as empty if empty_zero is TRUE.');
+    $this->assertFalse($field->isValueEmpty('0', FALSE), '"0" is considered not as empty if empty_zero is FALSE.');
+    $this->assertFalse($field->isValueEmpty(0, FALSE), '0 is considered not as empty if empty_zero is FALSE.');
 
-    $this->assertTrue($field->is_value_empty(NULL, TRUE, TRUE), 'Null should be always seen as empty, regardless of no_skip_empty.');
-    $this->assertTrue($field->is_value_empty(NULL, TRUE, FALSE), 'Null should be always seen as empty, regardless of no_skip_empty.');
+    $this->assertTrue($field->isValueEmpty(NULL, TRUE, TRUE), 'Null should be always seen as empty, regardless of no_skip_empty.');
+    $this->assertTrue($field->isValueEmpty(NULL, TRUE, FALSE), 'Null should be always seen as empty, regardless of no_skip_empty.');
   }
 
   /**
diff --git a/core/modules/views/views.theme.inc b/core/modules/views/views.theme.inc
index 6b16693..e787669 100644
--- a/core/modules/views/views.theme.inc
+++ b/core/modules/views/views.theme.inc
@@ -209,7 +209,7 @@ function template_preprocess_views_view_fields(&$vars) {
   foreach ($view->field as $id => $field) {
     // render this even if set to exclude so it can be used elsewhere.
     $field_output = $view->style_plugin->get_field($view->row_index, $id);
-    $empty = $field->is_value_empty($field_output, $field->options['empty_zero']);
+    $empty = $field->isValueEmpty($field_output, $field->options['empty_zero']);
     if (empty($field->options['exclude']) && (!$empty || (empty($field->options['hide_empty']) && empty($vars['options']['hide_empty'])))) {
       $object = new stdClass();
       $object->handler = &$view->field[$id];