code: function (params) {
    const oThis = this
    ;
  
    oThis.contractName = params.contract_name;
    oThis.contractAddress = params.contract_address;
    oThis.chain = params.chain;
    oThis.senderAddress = params.sender_address;
    oThis.methodName = params.method_name;
    oThis.methodArguments = params.method_arguments;
  }
docs: Estimate gas for a transaction service constructor
  
  @param {object} params
  @param {string} params.contract_name - Name of the contract having the method which needs to be called
  @param {string} params.contract_address - Address of the contract
  @param {string} params.chain - Chain on which the contract was deployed
  @param {string} params.sender_address - sender address
  @param {string} params.method_name - name of the method which needs to be called
  @param {string} params.method_arguments - arguments to be passed to the method
  
  @constructor