# File lib/sass/tree/if_node.rb, line 42
    def self._load(data)
      expr, else_, children = Marshal.load(data)
      node = IfNode.new(expr)
      node.else = else_
      node.children = children
      node.instance_variable_set('@last_else',
        node.else ? node.else.instance_variable_get('@last_else') : node)
      node
    end