# File lib/bson/bson_java.rb, line 11
    def self.serialize(obj, check_keys=false, move_id=false, max_bson_size=BSON::DEFAULT_MAX_BSON_SIZE)
      raise InvalidDocument, "BSON_JAVA.serialize takes a Hash" unless obj.is_a?(Hash)
      enc = Java::OrgJbson::RubyBSONEncoder.new(JRuby.runtime, check_keys, move_id, max_bson_size)
      ByteBuffer.new(enc.encode(obj))
    end