declared_system_kind

Julia

declared_system_kind(model::Model)

declared_system_kind(model::Model) -> Union{String,Nothing}

The system_kind the model DECLARES, verbatim, or nothing when the field is absent. No derivation happens here: this is the raw field read, the question validate asks when it needs to know whether the author committed to a kind at all.

Contrast system_kind , which ignores the field and derives the kind from the equations and parameters, and effective_system_kind , which composes the two.

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TypeScript

function declaredSystemKind(model: Model): SystemKind | null

The model’s explicit system_kind field, or null when absent.

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Python

declared_system_kind(model: Any) -> str | None

The model’s explicit system_kind field, or None when absent. Compare against system_kind to detect system_kind_mismatch.

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Rust

Rust does not export this function.

Go

func DeclaredSystemKind(model *Model) *string

DeclaredSystemKind returns the model’s EXPLICIT system_kind field, or nil when the document declares none.

It is the third of the three distinct questions the §6.3.1 system-kind family answers, and the only one that can say “the document did not say” (API_SPEC.md §8 item 11): SystemKind always derives an answer, and EffectiveSystemKind always produces one. Comparing this against SystemKind is what detects system_kind_mismatch.

Source · Go docs