question: @ Override public String toString ( ) { StringBuilder sb = new StringBuilder ( ) ; sb . append ( "{" ) ; boolean firstTime = true ; for ( Entry < Integer , String > entry : mCapabilities . entrySet ( ) ) { if ( firstTime ) { firstTime = false ; } else { sb . append ( "," ) ; } sb . append ( entry . getKey ( ) ) ; sb . append ( ":\"" ) ; sb . append ( entry . getValue ( ) ) ; sb . append ( "\"" ) ; return mCapabilities . toString ( ) ; } return sb . toString ( ) ; }
target:  Convert to string for debugging