RFR: 7033677: potential cast error in MemberEnter

[Vicente Romero]

On Thu, 16 Feb 2023 19:12:23 GMT, Archie L. Cobbs <duke at openjdk.org> wrote:

> In an `import` statement, the thing imported is always a `JCFieldAccess` (it's not legal in Java to import a simple name).
> 
> Therefore the type of `JCFieldAccess.qualid`, which is currently `JCTree`, is unnecessarily wide and can be narrowed to `JCFieldAccess`.

not sure as the JLS, section: `7.5.1 Single-Type-Import Declarations` has this rule:


SingleTypeImportDeclaration:
    import TypeName ;

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PR: https://git.openjdk.org/jdk/pull/12606