/guava/android/guava/src/com/google/common/collect/TreeBasedTable.java
checkArgument( rangeContains( checkNotNull( fromKey) ) ) ;checkArgument( rangeContains( checkNotNull( toKey) ) ) ;
checkArgument ( rangeContains ( checkNotNull ( toKey ) ) ) ;
public SortedMap<C, V> subMap(C fromKey, C toKey) { checkArgument(rangeContains(checkNotNull(fromKey)) && rangeContains(checkNotNull(toKey))); return new TreeRow(rowKey, fromKey, toKey); } @Override public SortedMap<C, V> headMap(C toKey) { <extra_id_0> return new TreeRow(rowKey, lowerBound, toKey); } @Override public SortedMap<C, V> tailMap(C fromKey) { checkArgument(rangeContains(checkNotNull(fromKey))); return new TreeRow(rowKey, fromKey, upperBound);