added ClassSerialize trait for toArray(), toString() method.

src/ClassSerialize.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace JiraRestApi;
+
+trait ClassSerialize
+{
+    /**
+     * class property to Array.
+     *
+     * @param array $ignoreProperties this properties to be excluded from array.
+     *
+     * @return array
+     */
+    public function toArray($ignoreProperties = [])
+    {
+        $ar = (get_object_vars($this));
+        foreach ($ar as $key => $value) {
+            if (in_array($key, $ignoreProperties)) {
+                unset($ar[$key]);
+            }
+        }
+
+        return $ar;
+    }
+
+    /**
+     * class property to String.
+     *
+     * @param array $ignoreProperties this properties to be excluded from String.
+     *
+     * @return string
+     */
+    public function toString($ignoreProperties = [])
+    {
+        $ar = $this->toArray($ignoreProperties);
+
+        return json_encode($ar, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
+    }
+}

src/Field/Field.php

@@ -1,6 +1,7 @@
 <?php
 
 namespace JiraRestApi\Field;
+use JiraRestApi\ClassSerialize;
 
 /**
  * Custom filed schema.
@@ -45,6 +46,8 @@ class Schema
  */
 class Field implements \JsonSerializable
 {
+    use ClassSerialize;
+
     /**
      * only custom field.
      */

src/Issue/IssueField.php

@@ -2,8 +2,12 @@
 
 namespace JiraRestApi\Issue;
 
+use JiraRestApi\ClassSerialize;
+
 class IssueField implements \JsonSerializable
 {
+    use ClassSerialize;
+
     public function __construct($updateIssue = false)
     {
         if ($updateIssue != true) {

src/Issue/PaginatedWorklog.php

@@ -1,12 +1,15 @@
 <?php
 
 namespace JiraRestApi\Issue;
+use JiraRestApi\ClassSerialize;
 
 /**
  * Class PaginatedWorklog.
  */
 class PaginatedWorklog
 {
+    use ClassSerialize;
+
     /**
      * @var int Start at position
      */

src/Issue/TimeTracking.php

@@ -7,12 +7,15 @@
  */
 
 namespace JiraRestApi\Issue;
+use JiraRestApi\ClassSerialize;
 
 /**
  * Class TimeTracking.
  */
 class TimeTracking implements \JsonSerializable
 {
+    use ClassSerialize;
+
     /**
      * Original estimate.
      *

src/Issue/Worklog.php

@@ -2,13 +2,16 @@
 
 namespace JiraRestApi\Issue;
 
+use JiraRestApi\ClassSerialize;
 use JiraRestApi\JiraException;
 
 /**
  * Class Worklog.
  */
 class Worklog
 {
+    use ClassSerialize;
+
     /**
      * @var int id of worklog 
      */

src/Project/Project.php

@@ -2,8 +2,12 @@
 
 namespace JiraRestApi\Project;
 
+use JiraRestApi\ClassSerialize;
+
 class Project
 {
+    use ClassSerialize;
+
     /**
      * return only if Project query by key(not id).
      *