docs: def add_pool_member(hostname, username, password, name, member):
      '''
      A function to connect to a bigip device and add a new member to an existing pool.
  
      hostname
          The host/address of the bigip device
      username
          The iControl REST username
      password
          The iControl REST password
      name
          The name of the pool to modify
      member
          The name of the member to add
          i.e. 10.1.1.2:80
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' bigip.add_pool_members bigip admin admin my-pool 10.2.2.1:80
      '''
  
      # for states
      if isinstance(member, dict):
  
          #check for state alternative name 'member_state', replace with state
          if 'member_state' in member.keys():
              member['state'] = member.pop('member_state')
  
          #replace underscore with dash
          for key in member:
              new_key = key.replace('_', '-')
              member[new_key] = member.pop(key)
  
          payload = member
      # for execution
      else:
  
          payload = {'name': member, 'address': member.split(':')[0]}
  
      #build session
      bigip_session = _build_session(username, password)
  
      #post to REST
      try:
          response = bigip_session.post(
              BIG_IP_URL_BASE.format(host=hostname) + '/ltm/pool/{name}/members'.format(name=name),
              data=salt.utils.json.dumps(payload)
          )
      except requests.exceptions.ConnectionError as e:
          return _load_connection_error(hostname, e)
  
      return _load_response(response)