```\nfunction addOperator(address \_operatorAddress, address \_feeRecipientAddress) external onlyAdmin returns (uint256) {\n StakingContractStorageLib.OperatorsSlot storage operators = StakingContractStorageLib.getOperators();\n StakingContractStorageLib.OperatorInfo memory newOperator;\n\n if (operators.value.length == 1) {\n revert MaximumOperatorCountAlreadyReached();\n }\n```\n