code: public void evictConnection(Connection connection)
     {
        HikariPool p;
        if (!isClosed() && (p = pool) != null && connection.getClass().getName().startsWith("com.zaxxer.hikari")) {
           p.evictConnection(connection);
        }
     }
docs: Evict a connection from the pool.  If the connection has already been closed (returned to the pool)
  this may result in a "soft" eviction; the connection will be evicted sometime in the future if it is
  currently in use.  If the connection has not been closed, the eviction is immediate.
  
  @param connection the connection to evict from the pool