lib/active_bugzilla/service.rb
def search(params = {})
      params[:creation_time]    &&= to_xmlrpc_timestamp(params[:creation_time])
      params[:last_change_time] &&= to_xmlrpc_timestamp(params[:last_change_time])
      params[:product]          ||= product if product

      results = execute('Bug.search', params)['bugs']
      return [] if results.nil?
      results
    end
def search(params = {})
      params[:creation_time]    &&= to_xmlrpc_timestamp(params[:creation_time])
      params[:last_change_time] &&= to_xmlrpc_timestamp(params[:last_change_time])
      params[:product]          ||= product if product

      results = execute('Bug.search', params)['bugs']
      return [] if results.nil?
      results
    end
http://www.bugzilla.org/docs/4.4/en/html/api/Bugzilla/WebService/Bug.html#search