PlugShopifyEmbeddedSwitch.Helper.get_param_from_header

You're seeing just the function get_param_from_header, go back to PlugShopifyEmbeddedSwitch.Helper module for more information.
Link to this function

get_param_from_header(conn, key)

Specs

get_param_from_header(Plug.Conn.t(), binary()) :: [binary()]