@Override
  public Description matchMemberReference(MemberReferenceTree tree, VisitorState state) {
    return checkInvocation(
        tree, ((JCMemberReference) tree).referentType, state, ASTHelpers.getSymbol(tree));
  }
@ Override public Description matchMemberReference ( MemberReferenceTree tree , VisitorState state ) { return checkInvocation ( tree , ( ( JCMemberReference ) tree ) . referentType , state , ASTHelpers . getSymbol ( tree ) ) ; }
check instantiations of `@ImmutableTypeParameter`s in method references