WP_Posts_List_Table::extra_tablenav

	/**
	 * @param string $which
	 */
	protected function extra_tablenav( $which ) {
		?>
		<div class="alignleft actions">
		<?php
		if ( 'top' === $which ) {
			ob_start();

			$this->months_dropdown( $this->screen->post_type );
			$this->categories_dropdown( $this->screen->post_type );
			$this->formats_dropdown( $this->screen->post_type );

			/**
			 * Fires before the Filter button on the Posts and Pages list tables.
			 *
			 * The Filter button allows sorting by date and/or category on the
			 * Posts list table, and sorting by date on the Pages list table.
			 *
			 * @since 2.1.0
			 * @since 4.4.0 The `$post_type` parameter was added.
			 * @since 4.6.0 The `$which` parameter was added.
			 *
			 * @param string $post_type The post type slug.
			 * @param string $which     The location of the extra table nav markup:
			 *                          'top' or 'bottom' for WP_Posts_List_Table,
			 *                          'bar' for WP_Media_List_Table.
			 */
			do_action( 'restrict_manage_posts', $this->screen->post_type, $which );

			$output = ob_get_clean();

			if ( ! empty( $output ) ) {
				echo $output;
				submit_button( __( 'Filter' ), '', 'filter_action', false, array( 'id' => 'post-query-submit' ) );
			}
		}

		if ( $this->is_trash && current_user_can( get_post_type_object( $this->screen->post_type )->cap->edit_others_posts ) && $this->has_items() ) {
			submit_button( __( 'Empty Trash' ), 'apply', 'delete_all', false );
		}
		?>
		</div>
		<?php
		/**
		 * Fires immediately following the closing "actions" div in the tablenav for the posts
		 * list table.
		 *
		 * @since 4.4.0
		 *