newClosureBlock function
Only for use by FFIgen bindings.
Implementation
BlockPtr newClosureBlock(VoidPtr invoke, Function fn, bool keepIsolateAlive) =>
_newBlock(
invoke,
_registerBlockClosure(fn, keepIsolateAlive),
_closureBlockDesc,
_blockClosureDisposer.sendPort.nativePort,
_blockHasCopyDispose,
);