Exception when processing slicing rules with multiple discriminators

[CodeRunRepeat]

Exception at FhirSlicing.cs:70

Example of offending slicing:

"slicing": {
                    "discriminator": [
                        {
                            "type": "type",
                            "path": "$this.resolve()"
                        },
                        {
                            "type": "profile",
                            "path": "$this.resolve()"
                        }
                    ],
                    "rules": "open"
                }