anchor.diff:        name: test
         logFormat: '%c{20}: %m%n'
         file: target/logback/testRun_Debug.log
  +      filters:
  +        - type: threshold
  +          level: info
   ----
   "log" is a root element of the Logback configuration and is bound to a https://github.com/bootique/bootique-logback/blob/master/bootique-logback/src/main/java/io/bootique/logback/LogbackContextFactory.java[`LogbackContextFactory`] object. It supports the following properties:
   
  
positive.code: |Max file size that causes rotation. Expressed in bytes, kilobytes, megabytes or gigabytes by suffixing a numeric value with KB, MB and respectively GB. For example: 5000000, 5000KB, 5MB and 2GB.
  |===
  
  === log.loggers
  
  [source,yaml]
  
negative.code: |`target`
  |`stdout`
  |Whether to log to standard output or standard error. Possible values are `stdout` and `stderr`
  
  |`filters`
  |none
  |A collection of filters to use with this appender
  |===
  
  ."file" Appender Property Reference
  