anchor.diff:  
   * The mapper class is generic, and could apply to multiple mapped types.
   * The type being mapped is generic, and/or the mapper could be composed
  -  from other registered mappers.
  +  of other registered mappers.
   * You want to bundle multiple mappers into a single class.
   
   Let's create a mapper factory for `Optional<T>` as an example. The factory
  
positive.code: link:https://github.com/arteam/metrics-jdbi3[metrics-jdbi3^]
  instruments using DropWizard-Metrics to emit statement timing statistics.
  
  Do you know of a project related to Jdbi? Send us an issue and we'll add a link
  here!
  
  === Contributing
  
negative.code: 
  There are a few ways to obtain a `Handle` instance at runtime.
  
  If your operation returns some result, use
  link:{jdbidocs}/core/Jdbi.html#withHandle-org.jdbi.v3.core.HandleCallback-[jdbi.withHandle()^]:
  
  [source,java,indent=0]
  