proc resume*(self: GDFunctionState; arg: Variant = newVariant()): Variant {.
gcsafe,
    locks: 0
.}

proc isValid*(self: GDFunctionState; extendedCheck: bool = false): bool {.
gcsafe,
    locks: 0
.}

method signalCallback*(self: GDFunctionState; variantArgs: varargs[Variant]): Variant {.

    gcsafe, locks: 0, base
.}