nl_tokens: Add a refinement on a normal facet
pl_tokens: function addFacetRefinement ( facet , value ) { if ( ! this . isConjunctiveFacet ( facet ) ) { throw new Error ( facet + ' is not defined in the facets attribute of the helper configuration' ) ; } if ( RefinementList . isRefined ( this . facetsRefinements , facet , <mask> ) ) return this ; return this . setQueryParameters ( { facetsRefinements : RefinementList . addRefinement ( this . facetsRefinements , facet , value ) } ) ; }