public boolean isImported() {
    return status == BlockImportStatus.IMPORTED || status == BlockImportStatus.ALREADY_IMPORTED;
  }
The result of the block import call

@return {@code true} if the block was added somewhere in the blockchain; otherwise {@code
    false}
ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/BlockImportResult.java