# t20041 - Test case for recursive variadic template class call
## Config
```yaml
diagrams:
  t20041_sequence:
    type: sequence
    glob:
      - t20041.cc
    include:
      namespaces:
        - clanguml::t20041
    using_namespace: clanguml::t20041
    from:
      - function: "clanguml::t20041::tmain()"
```
## Source code
File `tests/t20041/t20041.cc`
```cpp
#include <iostream>
#include <string>

namespace clanguml {
namespace t20041 {

template <typename... Args> struct A;

template <typename First, typename... Rest> struct A<First, Rest...> {
    void print(First first, Rest... rest)
    {
        std::cout << first << std::endl;

        A<Rest...> a;
        a.print(rest...);
    }
};

template <> struct A<> {
    void print() { }
};

void tmain()
{
    using namespace std::literals::string_literals;

    A<int, double, std::string> a;
    a.print(1, 3.14, "test"s);
}
}
}
```
## Generated PlantUML diagrams
![t20041_sequence](./t20041_sequence.svg "Test case for recursive variadic template class call")
## Generated Mermaid diagrams
![t20041_sequence](./t20041_sequence_mermaid.svg "Test case for recursive variadic template class call")
## Generated JSON models
```json
{
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  "name": "t20041_sequence",
  "participants": [
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      "id": "1389566400082670258",
      "name": "tmain",
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      "source_location": {
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        "file": "t20041.cc",
        "line": 23,
        "translation_unit": "t20041.cc"
      },
      "type": "function"
    },
    {
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          },
          "type": "method"
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      ],
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      "display_name": "A<std::string>",
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  "sequences": [
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          "source_location": {
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      "start_from": {
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        "location": "clanguml::t20041::tmain()"
      }
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  "using_namespace": "clanguml::t20041"
}
```