class BlockInfo extends Block implements LightWeightGSet.LinkedElement {

abstract boolean addStorage(DatanodeStorageInfo storage, Block reportedBlock)abstract boolean addStorage(DatanodeStorageInfo storage, Block reportedBlock);

abstract boolean addStorage(DatanodeStorageInfo storage, Block reportedBlock)public  BlockInfo(short size);
abstract boolean addStorage(DatanodeStorageInfo storage, Block reportedBlock)public  BlockInfo(Block blk, short size);

}