@Value.Default
  public double getEstimateGasToleranceRatio() {
    return 0.015d;
  }
Returns the ratio to use for eth_estimateGas tolerance. Default value is 0.015. This is
effectively how "close" the estimate is required to be. See {@link EthEstimateGas} for how this
is used in calculations.

@return the decimal ratio to use for eth_estimateGas tolerance
ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/ApiConfiguration.java