MDL-54987 charts: fix style issues

lib/classes/chart_axis.php

@@ -129,7 +129,7 @@ class chart_axis implements JsonSerializable {
      *
      * @return array
      */
-    public function jsonSerialize() {
+    public function jsonSerialize() { // @codingStandardsIgnoreLine (CONTRIB-6469).
         return [
             'label' => $this->label,
             'labels' => $this->labels,

lib/classes/chart_bar.php

@@ -38,11 +38,11 @@ class chart_bar extends chart_base {
     protected $horizontal = false;
 
     /**
-    * Add the horizontal to the parent and return the serialized data.
-    *
-    * @return array
-    */
-    public function jsonSerialize() {
+     * Add the horizontal to the parent and return the serialized data.
+     *
+     * @return array
+     */
+    public function jsonSerialize() { // @codingStandardsIgnoreLine (CONTRIB-6469).
         $data = parent::jsonSerialize();
         $data['horizontal'] = $this->get_horizontal();
         return $data;

lib/classes/chart_base.php

@@ -75,7 +75,7 @@ class chart_base implements JsonSerializable, renderable {
      *
      * @return array
      */
-    public function jsonSerialize() {
+    public function jsonSerialize() { // @codingStandardsIgnoreLine (CONTRIB-6469).
         return [
             'type' => $this->get_type(),
             'series' => $this->series,

lib/classes/chart_line.php

@@ -42,7 +42,7 @@ class chart_line extends chart_base {
      *
      * @return array
      */
-    public function jsonSerialize() {
+    public function jsonSerialize() { // @codingStandardsIgnoreLine (CONTRIB-6469).
         $data = parent::jsonSerialize();
         $data['smooth'] = $this->get_smooth();
         return $data;

lib/classes/chart_series.php

@@ -174,7 +174,7 @@ class chart_series implements JsonSerializable {
      *
      * @return array
      */
-    public function jsonSerialize() {
+    public function jsonSerialize() { // @codingStandardsIgnoreLine (CONTRIB-6469).
         $data = [
             'label' => $this->label,
             'labels' => $this->labels,

mod/quiz/report/overview/tests/report_test.php

@@ -145,7 +145,10 @@ class quiz_overview_report_testcase extends advanced_testcase {
 
     /**
      * Test bands.
+     *
      * @dataProvider get_bands_count_and_width_provider
+     * @param int $grade grade
+     * @param array $expected
      */
     public function test_get_bands_count_and_width($grade, $expected) {
         $this->resetAfterTest(true);