Function isExternalIdentifierSnak

isExternalIdentifierSnak(snak: Snak): snak is ExternalIdentifierSnak
Tests if a snak is an ExternalIdentifierSnak.
Parameters
- snak: Snak
  The snak to check.
Returns snak is ExternalIdentifierSnak
True if the snak is an ExternalIdentifierSnak.
Example
```
if (isExternalIdentifierSnak(snak)) {
 // Do something
}
```
- Defined in utils/guards/snak.ts:44