docs: public TemplateExpression addExpression(String expression, TypeName expressionType,
        boolean shouldCast, List<VariableInfo> parameters) {
      String id = "exp$" + this.expressions.size();
  
      TemplateExpression templateExpression = new TemplateExpression(id,
          expression.trim(),
          expressionType,
          shouldCast,
          parameters,
          context.getCurrentLine().orElse(null));
  
      this.expressions.add(templateExpression);
      return templateExpression;
    }