 
   @doc """
   Logs a debug message.
+  
+  Returns the atom `:ok` or an `{:error, reason}` tuple.
 
   ## Examples
 

  @doc """
  Logs an error.

  ## Examples

      Logger.error "oops"


  @doc """
  Logs a message.
  
  Returns the atom `:ok` or an `{:error, reason}` tuple.

  Developers should use the macros `Logger.debug/2`,
  `Logger.warn/2`, `Logger.info/2` or `Logger.error/2` instead
