public Builder blockHashLookup(final Function<Long, Hash> blockHashLookup) {
      this.blockHashLookup = blockHashLookup;
      return this;
    }
Sets the block hash lookup.

@param blockHashLookup the block hash lookup to set
@return the builder instance
plugin-api/src/main/java/org/hyperledger/besu/plugin/data/BlockOverrides.java