/guava/guava/src/com/google/common/collect/ArrayTable.java
return columnKeyToIndex.containsKey( columnKey) ;Integer columnIndex = columnKeyToIndex.get( columnKey) ;
Integer columnIndex = columnKeyToIndex.get ( columnKey ) ;
int columnIndex = index % columnList.size(); return at(rowIndex, columnIndex); } @Override public Map<R, @Nullable V> column(C columnKey) { checkNotNull(columnKey); <extra_id_0> if (columnIndex == null) { return emptyMap(); } else { return new Column(columnIndex); } }