public Multimap < Symbol , Symbol > outputSymbolMap ( int sourceIndex ) { return FluentIterable . from ( getOutputSymbols ( ) ) . toMap ( outputSymbol -> outputToInputs . get ( outputSymbol ) . get ( sourceIndex ) ) . asMultimap ( ) . inverse ( ) ; }
Returns the input to output symbol mapping for the given source channel . A single input symbol can map to multiple output symbols thus requiring a Multimap .