def new_bib_entry(code, year, opts, stdclass)
      bib = @registry.processors[stdclass].get(code, year, opts)
      bib = bib.to_xml if bib.respond_to? :to_xml
      bib = "not_found #{Date.today}" if bib.nil? || bib.empty?
      bib
    end
def new_bib_entry(code, year, opts, stdclass)
      bib = @registry.processors[stdclass].get(code, year, opts)
      bib = bib.to_xml if bib.respond_to? :to_xml
      bib = "not_found #{Date.today}" if bib.nil? || bib.empty?
      bib
    end
hash uses => , because the hash is imported from JSON
 @param code [String]
 @param year [String]
 @param opts [Hash]
 @param stdclass [Symbol]
 @return [Hash]