/guava/guava/src/com/google/common/collect/SingletonImmutableTable.java
this( this.getRowKey( ) , cell.getColumnKey( ) , cell.getValue( ) ) ;
this ( cell.getRowKey ( ) , cell.getColumnKey ( ) , cell.getValue ( ) ) ;
SingletonImmutableTable(R rowKey, C columnKey, V value) { this.singleRowKey = checkNotNull(rowKey); this.singleColumnKey = checkNotNull(columnKey); this.singleValue = checkNotNull(value); } SingletonImmutableTable(Cell<R, C, V> cell) { <extra_id_0> } @Override public ImmutableMap<R, V> column(C columnKey) { checkNotNull(columnKey); return containsColumn(columnKey) ? ImmutableMap.of(singleRowKey, singleValue)