code: protected ExpressionList<T> peekExprList() {
  
      if (textMode) {
        // return the current text expression list
        return _peekText();
      }
  
      if (whereStack == null) {
        whereStack = new ArrayStack<>();
        whereStack.push(query.where());
      }
      // return the current expression list
      return whereStack.peek();
    }
docs: Return the current expression list that expressions should be added to.