AEM MSM - Retrieve Language Copy by API

Hi community,

I'm working with the MSM to define a site like this example:

• /es/es/buy
• /es/en/buy
• /en/es/buy
• /en/en/buy
• /language-masters/es/buy
• /language-masters/en/buy

When a user visit the page /es/es/buy, I would like to retrieve the path of the language copy (/es/en/buy/) for implement a custom language navigation and use it in the "alternate" meta for purposes of SEO.

Does it possible with the API Java? I've used the next apis and I did't find the way:

• com.day.cq.wcm.api.PageManager
• com.day.cq.wcm.api.LanguageManager
• com.day.cq.dam.commons.util.DamLanguageUtil

Also, I've detected If I change the name of a language copy, the reference in the touch-enabled UI is lost. The page doesn't appear like languague copy. So, what happen If I want a language copy with different name? How can I define a language copy with different name without lost the reference? I would like a site like the next:

• /es/es/comprar
• /es/en/buy
• /en/es/comprar
• /en/en/buy
• /language-masters/es/comprar
• /language-masters/en/buy

Thanks!