/*
* call-seq: [](name)
*
* Return the value returned by method +name+.
*/
static VALUE cState_aref(VALUE self, VALUE name)
{
    GET_STATE(self);
    if (RTEST(rb_funcall(self, i_respond_to_p, 1, name))) {
        return rb_funcall(self, i_send, 1, name);
    } else {
        return Qnil;
    }
}