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lib/seo/facebook/build.ex
defprotocol SEO.Facebook.Build do
@fallback_to_any true
@moduledoc """
Implement `build/1` which receives your item and return a `SEO.Facebook.t` or `nil`
"""
@spec build(term) :: SEO.Facebook.t() | nil
def build(item)
end
defimpl SEO.Facebook.Build, for: Any do
def build(item), do: SEO.Facebook.build(item)
end