case Token.GETPROP:
case Token.NAME:
if (next.isQualifiedName()) {
if (value.isQualifiedName() &&
next.matchesQualifiedName(value)) {
// If the previous expression evaluates to value of a
// qualified name, and that qualified name is used again
// shortly, then we can exploit the assign here.
// Verify the assignment doesn't change its own value.