question: returns true if this lock is still open ie . has not been closed yet . concode_field_sep ShardId shardId concode_elem_sep AtomicBoolean closed concode_field_sep String toString concode_elem_sep void closeInternal concode_elem_sep ShardId getShardId concode_elem_sep void close
target: boolean function ( ) { return closed . get ( ) == false ; }