function - Wordpress: how to get first level of children from a category? -


I want to know if there is a function that returns only the first level of children of subcategories. 

  cat 1 sub -1.1 sub -1.2 sub-1.2.1 cat2 sub--2.1

Here only I want: sub-1.1, sub- 1.2 and sub-2.1.1

'$ this_category- & gt; Cat_ID);

thanks

please try 

  wp_list_categories (array ('depth' => 2));

-

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