public function get_body_classes() {
		$arr = $this->body_classes();
		$arr = is_string( $arr ) ? [$arr] : $arr;
		$arr = is_array( $arr ) ? $arr : [];

		return array_merge( $arr, [] );
	}
public function get_body_classes() {
		$arr = $this->body_classes();
		$arr = is_string( $arr ) ? [$arr] : $arr;
		$arr = is_array( $arr ) ? $arr : [];

		return array_merge( $arr, [] );
	}
public function get_body_classes ( ) { $ arr = $ this -> body_classes ( ) ; $ arr = is_string ( $ arr ) ? [ $ arr ] : $ arr ; $ arr = is_array ( $ arr ) ? $ arr : [ ] ; return array_merge ( $ arr , [ ] ) ; }
Get admin body css classes.

Use `body_classes` method to add custom admin body classes.

@return array
Get admin body css classes .