# File lib/rubygems/version.rb, line 212
    def self.create(input)
      if input.kind_of?(Requirement)
        return input
      elsif input.kind_of?(Array)
        return self.new(input)
      elsif input.respond_to? :to_str
        return self.new([input.to_str])
      else
        return self.default
      end
    end