sample get_category_data humbnail

object(stdClass)[343]
  public 'id' => int 241
  public 'title' => string 'android' (length=7)
  public 'filename' => string 'android.jpg' (length=11)
  public 'url' => string 'http://l/wp/site/wp-content/uploads/2017/11/android.jpg' (length=66)
  public 'link' => string 'http://l/wp/site/2017/11/07/home-apps-news/android/' (length=62)
  public 'alt' => string '' (length=0)
  public 'author' => string '1' (length=1)
  public 'description' => string '' (length=0)
  public 'caption' => string '' (length=0)
  public 'name' => string 'android' (length=7)
  public 'status' => string 'inherit' (length=7)
  public 'uploadedTo' => int 240
  public 'date' => string '2017-11-07T11:46:49.000Z' (length=24)
  public 'modified' => string '2018-04-14T17:19:57.000Z' (length=24)
  public 'menuOrder' => int 0
  public 'mime' => string 'image/jpeg' (length=10)
  public 'type' => string 'image' (length=5)
  public 'subtype' => string 'jpeg' (length=4)
  public 'icon' => string 'http://l/wp/site/wp-includes/images/media/default.png' (length=64)
  public 'dateFormatted' => string 'November 7, 2017' (length=16)
  public 'nonces' =>
    object(stdClass)[361]
      public 'update' => string '446265e759' (length=10)
      public 'delete' => string '570182c9a2' (length=10)
      public 'edit' => string '4b6664bffe' (length=10)
  public 'editLink' => string 'http://l/wp/site/wp-admin/post.php?post=241&action=edit' (length=66)
  public 'meta' => boolean false
  public 'authorName' => string 'site' (length=15)
  public 'uploadedToLink' => string 'http://l/wp/site/wp-admin/post.php?post=240&action=edit' (length=66)
  public 'uploadedToTitle' => string 'Home Apps News' (length=14)
  public 'filesizeInBytes' => int 162760
  public 'filesizeHumanReadable' => string '159 KB' (length=6)
  public 'context' => string '' (length=0)
  public 'height' => int 1284
  public 'width' => int 2560
  public 'orientation' => string 'landscape' (length=9)
  public 'sizes' =>
    object(stdClass)[363]
      public 'thumbnail' =>
        object(stdClass)[362]
          public 'height' => int 150
          public 'width' => int 150
          public 'url' => string 'http://l/wp/site/wp-content/uploads/2017/11/android-150x150.jpg' (length=74)
          public 'orientation' => string 'landscape' (length=9)
      public 'medium' =>
        object(stdClass)[364]
          public 'height' => int 150
          public 'width' => int 300
          public 'url' => string 'http://l/wp/site/wp-content/uploads/2017/11/android-300x150.jpg' (length=74)
          public 'orientation' => string 'landscape' (length=9)
      public 'large' =>
        object(stdClass)[365]
          public 'height' => int 321
          public 'width' => int 640
          public 'url' => string 'http://l/wp/site/wp-content/uploads/2017/11/android-1024x514.jpg' (length=75)
          public 'orientation' => string 'landscape' (length=9)
      public 'full' =>
        object(stdClass)[628]
          public 'url' => string 'http://l/wp/site/wp-content/uploads/2017/11/android.jpg' (length=66)
          public 'height' => int 1284
          public 'width' => int 2560
          public 'orientation' => string 'landscape' (length=9)
  public 'compat' =>
    object(stdClass)[629]
      public 'item' => string '' (length=0)
      public 'meta' => string '' (length=0)