question: public void write ( final IRawStore store ) { if ( addrMetadata != 0L ) { throw new IllegalStateException ( "Already written." ) ; } if ( indexUUID == null ) { throw new IllegalStateException ( "No indexUUID : wrong constructor?" ) ; } this . addrMetadata = store . write ( ByteBuffer . wrap ( SerializerUtil . serialize ( this ) ) ) ; }
target:  Write out the metadata record for the btree on the store and return the address.