isAccessibleIn method Null safety

bool isAccessibleIn(
  1. LibraryElement? library

Return true if this element, assuming that it is within scope, is accessible to code in the given library. This is defined by the Dart Language Specification in section 3.2:

A declaration m is accessible to library L if m is declared in L or if m is public.

TODO(migration): should not be nullable


bool isAccessibleIn(LibraryElement? library);