class Person()
  function Person( this, name, age )
    this.name := name;
    this.age := age;
  endfunction

  function greeting( this )
    return $"Hello, my name is {this.name} and I am {this.age} years old.";
  endfunction

  function rename( this, new_name )
    this.name := new_name;
    Print( $"Name changed to {this.name}" );
  endfunction
endclass

var john := Person( "John", 30 );
john.rename( "Johnny" ); // Method call
Person::rename( john, "Johnny" ); // Function call