[Bug]: Dot File Not Generated for Global functions?

### Describe the issue:

In the example below a dot file is not generated for the addressToUnit256 function. It seems to because it is not located inside of a contract rather it is a global function in a way. Is there a way to fix this?

### Code example to reproduce the issue:

```
function addressToUint256(address a) public pure returns (uint256) {
return uint256(uint160(a));
}

abstract contract Example {

}

```

### Version:

0.8.2

### Relevant log output:

_No response_