Problem about scala object which has class that ends with `$`

[aristotll]

How can I ignore the trailing$ in class name? Example code:

import org.apache.commons.logging.{Log, LogFactory}

object First {
  val log: Log = LogFactory.getLog(this.getClass)

  def main(args: Array[String]): Unit = {
    log.info("test")
  }
}

The console output:

2017-10-23 23:22:27,091 [INFO -scala_.loggings.First$:17] test

I do know the class of this.getClass ends with $, but with scala_.loggings.First:17 I can jump to the specific line. So how to ignore the $?