Added doxygen comments to common namespace

src/common/model/template_trait.h

@@ -1,5 +1,5 @@
 /**
- * src/common/model/template_trait.h
+ * @file src/common/model/template_trait.h
  *
  * Copyright (c) 2021-2023 Bartek Kryza <bkryza@gmail.com>
  *
@@ -25,30 +25,52 @@
 
 namespace clanguml::common::model {
 
+/**
+ * @brief Common interface for template diagram elements.
+ *
+ * @embed{template_trait_hierarchy_class.svg}
+ */
 class template_trait {
 public:
+    /**
+     * Render the template parameters to a stream.
+     *
+     * @param ostr Output stream
+     * @param using_namespace Relative to namespace
+     * @param relative Whether to make template arguments relative to
+     *                 `using_namespace`
+     * @return Reference to output stream
+     */
     std::ostream &render_template_params(std::ostream &ostr,
         const common::model::namespace_ &using_namespace, bool relative) const;
 
-    void set_base_template(const std::string &full_name);
-
-    std::string base_template() const;
-
+    /**
+     * Add template parameter
+     *
+     * @param tmplt Template parameter
+     */
     void add_template(template_parameter &&tmplt);
 
+    /**
+     * Get reference to template parameters.
+     *
+     * @return Reference to template parameters list.
+     */
     const std::vector<template_parameter> &template_params() const;
 
+    /**
+     * @brief Wrapper around @ref
+     * calculate_template_params_specialization_match()
+     *
+     * @param other Other template diagram element
+     * @return Match value
+     */
     int calculate_template_specialization_match(
         const template_trait &other) const;
 
-    bool is_implicit() const;
-
-    void set_implicit(bool implicit);
-
 private:
     std::vector<template_parameter> templates_;
     std::string base_template_full_name_;
-    bool is_implicit_{false};
 };
 
 } // namespace clanguml::common::model