How to use the @requestnetwork/types.StorageTypes.GasPriceType function in @requestnetwork/types

if (
      !apiResponse.fast ||
      !apiResponse.standard ||
      !apiResponse.safeLow ||
      isNaN(apiResponse.fast) ||
      isNaN(apiResponse.standard) ||
      isNaN(apiResponse.safeLow)
    ) {
      throw new Error(`Etherchain API response doesn't contain the correct format`);
    }

    // Retrieve the gas price from the provided gas price type and the format of the API response
    const apiGasPrice = new bigNumber(
      parseFloat(
        {
          [StorageTypes.GasPriceType.FAST as StorageTypes.GasPriceType]: apiResponse.fast,
          [StorageTypes.GasPriceType.STANDARD as StorageTypes.GasPriceType]: apiResponse.standard,
          [StorageTypes.GasPriceType.SAFELOW as StorageTypes.GasPriceType]: apiResponse.safeLow,
        }[type],
      ) * API_MULTIPLIER,
    );

    if (!EthereumUtils.isGasPriceSafe(apiGasPrice)) {
      throw Error('Etherchain provided gas price not safe to use');
    }

    return apiGasPrice;
  }
}

!apiResponse.fast ||
      !apiResponse.standard ||
      !apiResponse.safeLow ||
      isNaN(apiResponse.fast) ||
      isNaN(apiResponse.standard) ||
      isNaN(apiResponse.safeLow)
    ) {
      throw new Error(`Etherchain API response doesn't contain the correct format`);
    }

    // Retrieve the gas price from the provided gas price type and the format of the API response
    const apiGasPrice = new bigNumber(
      parseFloat(
        {
          [StorageTypes.GasPriceType.FAST as StorageTypes.GasPriceType]: apiResponse.fast,
          [StorageTypes.GasPriceType.STANDARD as StorageTypes.GasPriceType]: apiResponse.standard,
          [StorageTypes.GasPriceType.SAFELOW as StorageTypes.GasPriceType]: apiResponse.safeLow,
        }[type],
      ) * API_MULTIPLIER,
    );

    if (!EthereumUtils.isGasPriceSafe(apiGasPrice)) {
      throw Error('Etherchain provided gas price not safe to use');
    }

    return apiGasPrice;
  }
}

!apiResponse.fast ||
      !apiResponse.average ||
      !apiResponse.safeLow ||
      isNaN(apiResponse.fast) ||
      isNaN(apiResponse.average) ||
      isNaN(apiResponse.safeLow)
    ) {
      throw new Error(`EthGasStation API response doesn't contain the correct format`);
    }

    // Retrieve the gas price from the provided gas price type and the format of the API response
    const apiGasPrice = new bigNumber(
      parseFloat(
        {
          [StorageTypes.GasPriceType.FAST as StorageTypes.GasPriceType]: apiResponse.fast,
          [StorageTypes.GasPriceType.STANDARD as StorageTypes.GasPriceType]: apiResponse.average,
          [StorageTypes.GasPriceType.SAFELOW as StorageTypes.GasPriceType]: apiResponse.safeLow,
        }[type],
      ) * API_MULTIPLIER,
    );

    if (!EthereumUtils.isGasPriceSafe(apiGasPrice)) {
      throw Error('EthGasStation provided gas price not safe to use');
    }

    return apiGasPrice;
  }
}

// Get the fee from the size of the content
    // Throws an error if timeout is reached
    const fee = await Promise.race([
      Utils.timeoutPromise(this.timeout, 'Web3 getFeesAmount connection timeout'),
      this.requestHashSubmitter.methods.getFeesAmount(feesParameters.contentSize).call(),
    ]);

    // Determines the gas price to use
    // If the gas price is provided as a parameter, we use this value
    // If the gas price is not provided and we use mainnet, we determine it from gas price api providers
    // We use the fast value provided by the api providers
    // Otherwise, we use default value from config
    const gasPriceToUse =
      gasPrice ||
      (await gasPriceDefiner.getGasPrice(StorageTypes.GasPriceType.FAST, this.networkName));

    // parse the fees parameters to hex bytes
    const feesParametersAsBytes = web3Utils.padLeft(
      web3Utils.toHex(feesParameters.contentSize),
      LENGTH_BYTES32_STRING,
    );

    // Send transaction to contract
    // TODO(PROT-181): Implement a log manager for the library
    // use it for the different events (error, transactionHash, receipt and confirmation)
    return new Promise(
      (resolve, reject): any => {
        // This boolean is set to true once the ethereum metadata has been created and the promise has been resolved
        // When set to true, we use it to ignore next confirmation event function call
        let ethereumMetadataCreated: boolean = false;

if (
      !apiResponse.fast ||
      !apiResponse.average ||
      !apiResponse.safeLow ||
      isNaN(apiResponse.fast) ||
      isNaN(apiResponse.average) ||
      isNaN(apiResponse.safeLow)
    ) {
      throw new Error(`EthGasStation API response doesn't contain the correct format`);
    }

    // Retrieve the gas price from the provided gas price type and the format of the API response
    const apiGasPrice = new bigNumber(
      parseFloat(
        {
          [StorageTypes.GasPriceType.FAST as StorageTypes.GasPriceType]: apiResponse.fast,
          [StorageTypes.GasPriceType.STANDARD as StorageTypes.GasPriceType]: apiResponse.average,
          [StorageTypes.GasPriceType.SAFELOW as StorageTypes.GasPriceType]: apiResponse.safeLow,
        }[type],
      ) * API_MULTIPLIER,
    );

    if (!EthereumUtils.isGasPriceSafe(apiGasPrice)) {
      throw Error('EthGasStation provided gas price not safe to use');
    }

    return apiGasPrice;
  }
}