question: return the direct index to use for retrieval . concode_field_sep InvertedIndex II concode_elem_sep InvertedIndex CII concode_elem_sep DirectIndex DiI concode_elem_sep TagLexicon TL concode_elem_sep ComparableLexicon CL concode_elem_sep boolean loadSuccess concode_elem_sep Lexicon L concode_elem_sep Index ind concode_elem_sep DocumentIndex DoI concode_field_sep InvertedIndex getComparableInvertedIndex concode_elem_sep Lexicon getLexicon concode_elem_sep void loadIndices concode_elem_sep Index getIndex concode_elem_sep boolean allExists concode_elem_sep DocumentIndex getDocumentIndex concode_elem_sep TagLexicon getTagLexicon concode_elem_sep ComparableLexicon getComparableLexicon concode_elem_sep void close concode_elem_sep InvertedIndex getInvertedIndex concode_elem_sep Index createIndex concode_elem_sep Index createIndex
target: DirectIndex function ( ) { return DiI ; }