staticInterop top-level constant
          
          _StaticInterop
          const staticInterop
          
        
        
staticInterop enables the JS annotated class to be treated as a "static"
interop class.
These classes allow interop with native types, like the ones in dart:html.
These classes should not contain any instance members, inherited or
otherwise, and should instead use static extension members.
Implementation
const _StaticInterop staticInterop = _StaticInterop();