Get ID of page that has a certain template

gistfile1.txt

      $the_query = new WP_Query( 
                      array(
                        'post_type'  => 'page',
                        'meta_key'   => '_wp_page_template', 
                        'meta_value' => 'page-attorney.php' //aici e pagina templateului
                      ) 
                  );

  		if ( $the_query->have_posts() ) {
				while ( $the_query->have_posts() ) {
					$the_query->the_post();
					echo get_the_ID();
				}
			}
			/* Restore original Post Data */
			wp_reset_postdata();