code: function (params) {
    const oThis = this
    ;
  
    params = params || {};
    oThis.transactionHash = params.transaction_hash;
    oThis.chain = params.chain;
    oThis.addressToNameMap = params.address_to_name_map || {};
  }
docs: Get Transaction Receipt Service
  
  @param {object} params -
  @param {string} params.chain - Chain on which transaction was executed
  @param {string} params.transaction_hash - Transaction hash for lookup
  @param {object} params.address_to_name_map - hash of contract address to contract name
  
  @constructor