    # File lib/xsd/xmlparser/nokogiri.rb, line 65
          def start_element_namespace name, attrs = [], prefix = nil, uri = nil, ns = []
            ###
            # Deal with SAX v1 interface
            name = [prefix, name].compact.join(':')
            attributes = ns.map { |ns_prefix,ns_uri|
              [['xmlns', ns_prefix].compact.join(':'), ns_uri]
            } + attrs.map { |attr|
              [[attr.prefix, attr.localname].compact.join(':'), attr.value]
            }.flatten
            start_element name, attributes
          end