Net::OAI::ListRecords - Results of the ListRecords OAI-PMH verb.
Like all responses to OAI verbs, ListRecords is based on Net::OAI::Base and inherits its methods.
You probably don't want to be using this method yourself, since Net::OAI::Harvester::listRecords() calls it for you.
Returns the Net::OAI::Record object for the next OAI record in the response,
undef if none remain.
resumptionToken handling is performed automagically if the original request was listAllIdentifiers().
Returns the name of the package being used to represent the individual metadata records. If unspecified it defaults to Net::OAI::Record::OAI_DC which should be ok.