# File lib/versionomy/conversion.rb, line 100
      def get(from_schema_, to_schema_, strict_=false)
        key_ = _get_key(from_schema_, to_schema_)
        conversion_ = @mutex.synchronize{ @registry[key_] }
        if strict_ && conversion_.nil?
          raise Errors::UnknownConversionError
        end
        conversion_
      end