title: Pass custom options to a symfony2 form
body: <p>in symfony 1.4  it was possible to parameterize a form class definition, via the options of the form. Is there any way to pass custom options to my custom form type??? i've tried to use the options parameter of the <code>buildForm</code> method, but i'm not very sure what this array is, and apparently it is not for what i want... Thanks!</p>