   @fromForm: ->
     (new this).fromForm(arguments...)
     
-  @guid: ->
-    guid()
-
   # Private
 
   @recordsValues: ->

  @toString: -> "#{@className}(#{@attributes.join(", ")})"

  @find: (id) ->
    record = @records[id]
    throw('Unknown record') unless record
    record.clone()

  @exists: (id) ->
    try
      return @find(id)

    result = new @constructor(@attributes())
    if newRecord is false
      result.newRecord = @newRecord
      result.cid       = @cid
    else
      delete result.id
    result
