code: def add(self, host=None, f_community=None, f_access=None, f_version=None):
          
          return self.send.snmp_add(host, f_community, f_access, f_version)
docs: Add an SNMP community string to a host
  
          :param host: t_hosts.id or t_hosts.f_ipaddr
          :param f_community: Community string to add
          :param f_access: READ or WRITE
          :param f_version: v1, v2c or v3
          :return: (True/False, t_snmp.id/Error string)