new (REXML::Document)

    # File src/rexml/document.rb, line 36
                    def initialize( source = nil, context = {} )
                            super()
                            @context = context
                            return if source.nil?
                            if source.kind_of? Document
                                    @context = source.context
                                    super source
                            else
                                    build(  source )
                            end
                    end