1. Deprecated("Internal Use Only")
void setDartHtmlWrapperFor(JsObject object, wrapper)

Set the dart wrapper object for object. Top-level so we we can access it from other libraries without it being a public instance field on JsObject.

Source 

@Deprecated("Internal Use Only")
void setDartHtmlWrapperFor(JsObject object, wrapper) {
  object._dartHtmlWrapper = wrapper;
}