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: svn.rb
    path of file: ./repos/brew/Library/Homebrew/utils
    
    the code of the file until where you have to start completion: module Utils
  def self.clear_svn_version_cache
    remove_instance_varia
    
  def self.svn_remote_exists?(url)
    return true unless svn_available?

    # OK to unconditionally trust here because we're just checking if
    # a URL exists.
    quiet_system "svn", "ls", url, "--depth", "empty",
                 "--non-interactive", "--trust-server-cert"
  end