# File lib/json-schema/validator.rb, line 126
    def self.version_string_for(version)
      # I'm not a fan of this, but it's quick and dirty to get it working for now
      return "draft-04" unless version
      case version.to_s
      when "draft4", "http://json-schema.org/draft-04/schema#"
        "draft-04"
      when "draft3", "http://json-schema.org/draft-03/schema#"
        "draft-03"
      when "draft2"
        "draft-02"
      when "draft1"
        "draft-01"
      else
        raise JSON::Schema::SchemaError.new("The requested JSON schema version is not supported")
      end
    end