Enumeration of the possible filter types.
Each list binding maintains two separate lists of filters: one for filters defined by the control that owns the binding, and another list for filters that an application can define in addition. When executing the filter operation, both sets of filters are combined.
See method ListBinding#filter on how to specify the filter type. When no filter type is given to that method, the behavior depends on the specific model implementation and should be documented in the API reference for that model.