unless (defined(%{"${class}::"}) || exists($INC{join '/', split /::/, $class.'.pm'})) {
    # allow all for static and only specified path for dynamic bindings
    local @INC = (($static ? @INC : ()), grep {!ref && m![/\\.]!} $self->dispatch_to);
    eval 'local $^W; ' . "require $class";
    die "Failed to access class ($class): $@" if $@;
    $self->dispatched($class) unless $static;
  }