polserver/testsuite/escript/classes/method-simple.src

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

  function print( this, prefix )
    ::print( $"{prefix}: {this.name}!" );
  endfunction

  function set_member( this, param )
    this.print( $"succeeded with method_id call {param}" );
    return "done";
  endfunction
endclass

var obj := Foo( "NAME" );
obj.print( "PREFIX" );
print( obj.set_member( "param" ) );