OptionalfeatureOptional feature ID. Required by set and get, optional for remove. A numeric feature ID matches its decimal text, such as "7" for the GeoJSON id 7.
Source ID. Required and borrowed for the duration of the call.
OptionalsourceOptional source layer ID. Required for vector-source disambiguation.
OptionalstateOptional state key. Used only by remove and requires feature_id.
Feature-state source, feature, and key selector.
See
mln_feature_state_selectorin the C API reference.