method Ddc.prototype.getFilterimport { Ddc } from "https://deno.land/x/ddc_vim@v4.0.3/ddc.ts"; getFilter(denops: Denops,options: DdcOptions,userFilter: UserFilter,): Promise<[BaseFilter<BaseFilterParams> | undefined, FilterOptions, BaseFilterParams]>Parametersdenops: Denopsoptions: DdcOptionsuserFilter: UserFilterReturnsPromise<[BaseFilter<BaseFilterParams> | undefined, FilterOptions, BaseFilterParams]>