default boolean includeInLightValidation() {
    return true;
  }
Validates a block header against its ancestors.

@param header the block header to validate
@param parent the block header corresponding to the parent of the header being validated.
@param protocolContext the protocol context
@return {@code true} if valid; otherwise {@code false}
ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/AttachedBlockHeaderValidationRule.java