You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: css_import_node.rb
    path of file: ./repos/stackneveroverflow/vendor/bundle/ruby/2.3.0/gems/sass-3.4.24/lib/sass/tree
    
    the code of the file until where you have to start completion: module Sass::Tree
  # A node representing an `@import` rule that's importing plain CSS.
  #
  # @see Sass::Tree
  class CssImportNode < DirectiveNode
    # The URI being imported, either as a plain string or an interpolated
    # script string.
    #
    # @return [String,
    
    def value; raise NotImplementedError; end

    # @see DirectiveNode#resolved_value
    def resolved_value
      @resolved_value ||=
        begin
          str = "@import #{resolved_uri}"
          str << " supports(#{supports_condition.to_css})" if supports_condition
          str << " #{resolved_query.to_css}" if resolved_query
          str
        end
    end