def line_numbers
      return (line..line) unless @value && text

      end_line = line + lines.count
      end_line = nontrivial_end_line if line == end_line

      (line..end_line)
    end
def line_numbers
      return (line..line) unless @value && text

      end_line = line + lines.count
      end_line = nontrivial_end_line if line == end_line

      (line..end_line)
    end
The line numbers that are contained within the node.

 @api public
 @return [Range]