val evaluationResults = engine.evaluate {
    // Evaluates all expressions from the referenced library
    library(versionedIdentifier)

    // Repeat when multiple libraries need to be evaluated
    library("Library1") // Short for library(VersionedIdentifier().apply { id = "Library1" })

    // Evaluate specific expressions and functions.
    library("Library2") {
        // Use expressions(...) to pass in "evaluation expression refs" (the name comes from
        // ELM's ExpressionRef and its subclass FunctionRef)
        expressions(EvaluationExpressionRef("expr1"), EvaluationExpressionRef("expr2"), ...)

        // Same as above
        expressions("expr1", "expr2", ...)

        // Evaluate func1 with parameters (1, 2)
        expressions(EvaluationFunctionRef("func1", /*signature*/ null, /*args*/ listOf(1, 2)))
    }

    // Additional params
    contextParameter = "Patient" to pat1
    parameters = mapOf(...)
    debugMap = DebugMap()
    evaluationDateTime = ZonedDateTime.of(2025, 12, 31, 0, 0, 0, 0, ZoneOffset.UTC)
}

// Get results for library using versionedIdentifier
val libraryResults = evaluationResults.results[versionedIdentifier]
// Or use shorthand in the single-lib case (returns non-nullable EvaluationResult), same as before:
// val libraryResults = evaluationResults.onlyResultOrThrow

// Use the brackets operator [...] to get the results for expressions and
// function evaluations from EvaluationResult
val exprValue = libraryResults?["expr1"]?.value
val funcValue = libraryResults?[evaluationFunctionRef]?.value