contract ERC20TransferProxyForDeprecated is OwnableOperatorRole {
    /// @notice Calls transferFrom for ERC20 and fails on error.
    /// @notice Can be called only by operator.
    function erc20TransferFrom(DIERC20 token, address from, address to, uint256 value) external onlyOperator {
       token.transferFrom(from, to, value);
    }
}
function erc20TransferFrom(DIERC20 token, address from, address to, uint256 value) external onlyOperator {
   token.transferFrom(from, to, value);
}

/// @notice Calls transferFrom for ERC20 and fails on error.
/// @notice Can be called only by operator.