   end
 
   @doc """
-  Gets all values for a specific key.
+  Gets all values for a specific `key`.
 
   ## Examples
 

  end

  @doc """
  Fetches the value for specific key. If key does not exist,
  an error is raised.

  ## Examples


  end

  @doc """
  Returns whether a given `key` exists in the given `keywords`.

  ## Examples

