the number of unique stems in this field . concode_field_sep String[] stems concode_elem_sep String fieldName concode_elem_sep int[] stemsFreq concode_elem_sep Terms luceneTerms concode_elem_sep Term[] terms concode_elem_sep int docId concode_elem_sep int[] positions concode_elem_sep int fieldLength concode_field_sep String stemString concode_elem_sep int stemAt concode_elem_sep int stemFreq concode_elem_sep int stemDf concode_elem_sep long totalStemFreq concode_elem_sep int indexOfStem concode_elem_sep int positionsLength
int function ( ) { if ( this . fieldLength == 0 ) return 0 ; return this . stems . length ; }