Function inverseLookup

inverseLookup(token: Token): string
Returns the string representation of a token type.

This is useful for debugging and error reporting, allowing you to convert token enum values back to their string representations.
Parameters
- token: Token
  The token type to convert
Returns string
The string representation of the token, or undefined if not found
Example: Token to string conversion
```
inverseLookup(Token.Qubit);   // Returns 'qubit'
inverseLookup(Token.If);      // Returns 'if'
inverseLookup(Token.Pi);      // Returns 'pi'
```
- Defined in src/qasm3/token.ts:392