code: function(class_data, path) {
  
  		var implements_source = this._sources[path],
  			name,
  			references_offset;
  
  		if (Lava.schema.DEBUG) {
  
  			if (!implements_source) Lava.t('Implements: class not found - "' + path + '"');
  			for (name in implements_source.shared) Lava.t("Implements: unable to use a class with Shared as mixin.");
  			if (class_data.implements.indexOf(path) != -1) Lava.t("Implements: class " + class_data.path + " already implements " + path);
  
  		}
  
  		class_data.implements.push(path);
  		references_offset = class_data.references.length;
  		// array copy is inexpensive, cause it contains only reference types
  		class_data.references = class_data.references.concat(implements_source.references);
  
  		this._extend(class_data, class_data.skeleton, implements_source, implements_source.skeleton, true, references_offset);
  
  	}
docs: Implement members from another class into current class data
  @param {_cClassData} class_data
  @param {string} path