BGMP modify CPT params

public function modifyPostTypeParams( $params )
{
    $params[ 'labels' ][ 'name' ]               = 'Vendors';
    $params[ 'labels' ][ 'singular_name' ]      = 'Vendor';
    $params[ 'labels' ][ 'add_new_item' ]       = 'Add New Vendor';
    $params[ 'labels' ][ 'edit_item' ]          = 'Edit Vendor';
    $params[ 'labels' ][ 'new_item' ]           = 'New Vendor';
    $params[ 'labels' ][ 'view' ]               = 'View Vendors';
    $params[ 'labels' ][ 'view_item' ]          = 'View Vendor';
    $params[ 'labels' ][ 'search_items' ]       = 'Search Vendors';
    $params[ 'labels' ][ 'not_found' ]          = 'No Vendors found';
    $params[ 'labels' ][ 'not_found_in_trash' ] = 'No Vendors found in Trash';
    $params[ 'labels' ][ 'parent' ]             = 'Parent Vendor';
    $params[ 'singular_label' ]                 = 'Vendors';
    $params[ 'rewrite' ]                        = array( 'slug' => 'vendors/%category%', 'with_front' => false );

    $params[ 'has_archive' ]                    = 'vendors';

    return $params;
}
add_filter( BasicGoogleMapsPlacemarks::PREFIX . 'post-type-params', array( $this, 'modifyPostTypeParams' ) );