def node_for_line(line)
      find(-> { HamlLint::Tree::NullNode.new }) { |node| node.line_numbers.cover?(line) }
    end
def node_for_line(line)
      find(-> { HamlLint::Tree::NullNode.new }) { |node| node.line_numbers.cover?(line) }
    end
Gets the node of the syntax tree for a given line number.

 @param line [Integer] the line number of the node
 @return [HamlLint::Node]