public LuaLocalVariableDeclaratorSyntax(LuaVariableDeclaratorSyntax declarator)
 {
     if (declarator == null)
     {
         throw new ArgumentNullException(nameof(declarator));
     }
     Declarator = declarator;
 }
 public LuaLocalVariableDeclaratorSyntax(LuaIdentifierNameSyntax identifier, LuaExpressionSyntax expression = null)
 {
     Declarator = new LuaVariableDeclaratorSyntax(identifier, expression);
 }