question: @ Override public String toString ( ) { StringBuffer text = new StringBuffer ( ) ; if ( m_trainInstances == null ) { text . append ( "CFS subset evaluator has not been built yet\n" ) ; } else { text . append ( "\tCFS Subset Evaluator\n" ) ; if ( m_missingSeparate ) { text . append ( "\tTreating missing values as a separate value\n" ) ; } if ( m_locallyPredictive ) { text . append ( "\tIncluding locally predictive attributes\n" ) ; } } return text . toString ( ) ; }
target:  returns a string describing CFS