@Override
  public @NotNull GroovyElementVisitor buildGroovyVisitor(@NotNull ProblemsHolder holder, boolean isOnTheFly) {
    return new GroovyElementVisitor() {
      @Override
      public void visitReferenceExpression(@NotNull GrReferenceExpression refExpression) {
        checkForSecondUnsafeCall(refExpression, holder);
      }
    };
  }
@Override
  public @NotNull GroovyElementVisitor buildGroovyVisitor(@NotNull ProblemsHolder holder, boolean isOnTheFly)