class DatabasePingLogEntry extends DatabaseLogEntry {
  
  private final Calendar date;
  private final Long client;
  private final Long user;

  public DatabasePingLogEntry(Long client, Long user) {
    this.client = client;
    this.user = user;
    this.date = Calendar.getInstance();
  }

  @Override
  public Map<Object, Object> getMapping() {<FILL_FUNCTION_BODY>}

  @Override
  public String getMappingIdentifier() {
    return "org.languagetool.server.LogMapper.pings";
  }

  @Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
    DatabasePingLogEntry that = (DatabasePingLogEntry) o;
    return Objects.equals(client, that.client) && Objects.equals(user, that.user);
  }

  @Override
  public int hashCode() {
    return Objects.hash(client, user);
  }
}

    HashMap<Object, Object> parameters = new HashMap<>();
    parameters.put("day", ServerTools.getSQLDateString(date));
    parameters.put("created_at", ServerTools.getSQLDatetimeString(date));
    parameters.put("client", client);
    parameters.put("user_id", user);
    return parameters;
  
<methods>public non-sealed void <init>() ,public org.languagetool.server.DatabaseLogEntry followup() ,public abstract Map<java.lang.Object,java.lang.Object> getMapping() ,public abstract java.lang.String getMappingIdentifier() ,public void print(java.io.PrintStream) ,public void print() <variables>