Custom lists
    The custom list is just a list of objects, that can be saved into
    Siemplify's DBs, as a shared resource, fetched and queried by each
    script execution instance.
The custom list can be edited in the platform Settings screen. This section deals with SDK functionalities for
    custom lists
  
    Custom List item structure:
This object is defined in 
    SiemplifyDataModel
  
  | Param Name | Param Type | Possible Values | 
|---|---|---|
| identifier | string | Any identifier whatsoever. Usually this identifier represents a possible entity in future alerts | 
| category | string | Category from the Siemplify settings | 
| environment | string | Environment name from the Siemplify settings | 
To create a CustomList object, do the following:
    from SiemplifyAction import SiemplifyAction
    from SiemplifyDataModel import CustomList
    custom_list = CustomList(identifier="203.0.113.1", category="AllowListed HOSTs", environment="")