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: download_strategy.rb
    path of file: ./repos/brew/Library/Homebrew/compat
    
    the code of the file until where you have to start completion: require "download_strategy"

# S3DownloadStrategy downloads tarballs from AWS S3.
# To use it, add `:using => :s3` to the URL section of your
# formula.  This download strategy uses AWS access tokens (in the
# environment variables `AWS_ACCESS_KEY_ID` and `AWS_SECRET_ACCESS_KEY`)
# to sign the request.  This strategy is good in a corporat
    
      def detect_from_symbol(symbol)
        case symbol
        when :github_private_repo
          odisabled(":github_private_repo",
            "a vendored GitHubPrivateRepositoryDownloadStrategy in your own formula or tap (using require_relative)")
          GitHubPrivateRepositoryDownloadStrategy
        when :github_private_release
          odisabled(":github_private_repo",
            "a vendored GitHubPrivateRepositoryReleaseDownloadStrategy in your own formula or tap "\
            "(using require_relative)")
          GitHubPrivateRepositoryReleaseDownloadStrategy
        when :s3
          odisabled(":s3",
            "a vendored S3DownloadStrategy in your own formula or tap (using require_relative)")
          S3DownloadStrategy
        when :scp
          odisabled(":scp",
            "a vendored ScpDownloadStrategy in your own formula or tap (using require_relative)")
          ScpDownloadStrategy
        else
          super(symbol)
        end