extend crm_lib_reuse application

Hi Friends,

I have to extend CRM fiori app - 'My Accounts', In this application there is a tab 'Marketing Attributes' under this tab they are calling another app 'crm_lib_reuse'.

In My requirement I have to add some functionality to Marketing attribute tab, But this tab is calling 'crm_lib_reuse' so ultimately I have to extend/Modify 'crm_lib_reuse'.

But As 'crm_lib_reuse' is not a complete application we can't create extensibility project for it. So How can I add required functionality to it.

Is there any way to do it.

Thanks in advance.