code: protected static RedactableArgument logIdent(final ChannelHandlerContext ctx, final Endpoint endpoint) {
          return system("[" + ctx.channel().remoteAddress() + "][" + endpoint.getClass().getSimpleName() + "]: ");
      }
docs: Simple log helper to give logs a common prefix.
  
  @param ctx the context.
  @param endpoint the endpoint.
  @return a prefix string for logs.