Duplicated update_post_meta in multi-instances of the boilerplate

[rafasashi]

If you use multiple instances of the boilerplate the following line is going to take all the fields created by all the instances and duplicate the update process.

WordPress-Plugin-Template/includes/lib/class-wordpress-plugin-template-admin-api.php

Line 282 in 27d7286

$fields = apply_filters( $post->post_type . '_custom_fields', array(), $post->post_type );

Any idea on how to prevent this redundancy?