fn::CustomMF_SI_SO<float, float> fn_sin{"sin", [](float t) { return sinf(t); }};
  fn::CustomMF_SI_SO<float, float> fn_cos{"cos", [](float t) { return sinf(t); }};

  fn::MFProcedure procedure;
  fn::MFProcedureBuilder builder(procedure);

  fn::MFVariable *var_t = &builder.add_input_parameter(fn::MFDataType::ForSingle<float>(), "time_param");
  fn::MFVariable *var_c = &builder.add_input_parameter(fn::MFDataType::ForSingle<bool>(), "condition");

  // x = sin(t)
  auto [var_s] = builder.add_call<1>(fn_sin, {var_t});
  // if somecondition:
  fn::MFProcedureBuilder::Branch branch = builder.add_branch(*var_c);
  //   x = cos(t)
  branch.branch_true.add_call_with_all_variables(fn_cos, {var_t, var_s});

  builder.set_cursor_after_branch(branch);
  builder.add_destruct({var_t, var_s, var_c});

  // return x
  builder.add_return();

  EXPECT_TRUE(procedure.validate());