var._putNativeElements
private
void _putNativeElements(Sink)(ref Sink sink) const @safeWrites the native-array contents in the boxed-ARRAY text form ([elem, elem, ...]); real elements render via their double value, matching the scalar REAL precedent. Character elements render as their numeric code-unit values: these buffers are code-unit containers, not STRING values, and arbitrary units (surrogates, values above 0x10FFFF) must format without a Unicode error.