Source

File: wp-includes/class-walker-comment.php

protected function ping( $comment, $depth, $args ) {
		$tag = ( 'div' === $args['style'] ) ? 'div' : 'li';
		?>
		<<?php echo $tag; ?> id="comment-<?php comment_ID(); ?>" <?php comment_class( '', $comment ); ?>>
			<div class="comment-body">
				<?php _e( 'Pingback:' ); ?> <?php comment_author_link( $comment ); ?> <?php edit_comment_link( __( 'Edit' ), '<span class="edit-link">', '</span>' ); ?>
			</div>
		<?php
	}