SelectorEntry.boolean_value
SelectorEntry.fileset_list_value
SelectorEntry.int_list_value
SelectorEntry.int_value
Exactly one of the following fields (except for glob_criteria) must be populated - note that the BOOLEAN and TRISTATE caveat in Attribute’s comment does not apply here. The type field in the SelectorList containing this entry indicates which of these fields is populated, in accordance with the comments on Discriminator enum values above. (To be explicit: BOOLEAN populates the boolean_value field and TRISTATE populates the tristate_value field.)
SelectorEntry.is_default_value
True if the entry’s value is the default value for the type as a result of the condition value being specified as None (ie: {“//condition”: None}).
SelectorEntry.label
The key of the selector entry. At this time, this is the label of a config_setting rule, or the pseudo-label “//conditions:default”.

