use CallLogger;
use ;
use MultiLogger;
/// Example of log filtering in action. This example uses a `MultiLogger` to send each log line to two `CallLogger`s.
/// One of the `CallLogger`s filters Info messages and below and the other filters Error messages and below. When
/// something is logged at Info level, only one of the loggers logs it so it appears once, however when something is
/// logged at Error level, both loggers log it so it appears twice.
///
/// ```
/// cargo run --example log_filtering
/// ```