Extract And Move Method	public setBlockToken(b LocatedBlock, mode BlockTokenSecretManager.AccessMode) : void extracted from public getAdditionalBlock(src String, clientName String, previous ExtendedBlock, excludedNodes HashMap<Node,Node>) : LocatedBlock in class org.apache.hadoop.hdfs.server.namenode.FSNamesystem & moved to class org.apache.hadoop.hdfs.server.blockmanagement.BlockManager