ShuffleModel shuffle = new ShuffleAnalyzer(environment).analyze(block);
assertThat(environment.hasError(), is(false));
if (shuffle == null) {
return null;
}
Name keyTypeName = new ShuffleKeyEmitter(environment).emit(shuffle);
Name valueTypeName = new ShuffleValueEmitter(environment).emit(shuffle);
Name groupComparatorTypeName = new ShuffleGroupingComparatorEmitter(environment).emit(shuffle, keyTypeName);
Name sortComparatorTypeName = new ShuffleSortComparatorEmitter(environment).emit(shuffle, keyTypeName);
Name partitionerTypeName = new ShufflePartitionerEmitter(environment).emit(shuffle, keyTypeName, valueTypeName);
CompiledShuffle compiled = new CompiledShuffle(