Print downloaded content before YAML parsing

repository_index.rb

# Creates a new repository index, populating it with values from an index file.
    #
    # @param [String] repository_root the root of the repository to create the index for
    def initialize(repository_root)
      @index = {}
      JavaBuildpack::Util::DownloadCache.new.get("#{repository_root}#{INDEX_PATH}") do |file| # TODO: Use global cache #50175265
        content = file.read
        puts content
        @index.merge! YAML.load(content)
      end
    end