public Builder mixHashOrPrevRandao(final Hash mixHashOrPrevRandao) {
      this.mixHashOrPrevRandao = mixHashOrPrevRandao;
      return this;
    }
Sets the mix hash

@param mixHashOrPrevRandao the mix hash
@return the builder instance
plugin-api/src/main/java/org/hyperledger/besu/plugin/data/BlockOverrides.java