PsiJetFileStubImpl[package=some]
  PACKAGE_DIRECTIVE
    REFERENCE_EXPRESSION[referencedName=some]
  IMPORT_LIST
  PROPERTY[fqName=some.a, hasBackingField=null, hasDelegate=false, hasDelegateExpression=false, hasInitializer=true, hasReturnTypeRef=false, isExtension=false, isTopLevel=true, isVar=false, name=a]
