WP_Customize_Panel::json()

	public function json() {
		$array = wp_array_slice_assoc( (array) $this, array( 'id', 'description', 'priority', 'type' ) );
		$array['title'] = html_entity_decode( $this->title, ENT_QUOTES, get_bloginfo( 'charset' ) );
		$array['content'] = $this->get_content();
		$array['active'] = $this->active();
		$array['instanceNumber'] = $this->instance_number;
		$array['autoExpandSoleSection'] = $this->auto_expand_sole_section;
		return $array;
	}