URI.merge
You're seeing just the function
merge, go back to URI module for more information.
Specs
Merges two URIs.
This function merges two URIs as per RFC 3986, section 5.2.
Examples
iex> URI.merge(URI.parse("http://google.com"), "/query") |> to_string()
"http://google.com/query"
iex> URI.merge("http://example.com", "http://google.com") |> to_string()
"http://google.com"