src/main/java/org/ucmtwine/parameter/types/ResultSetParameter.java
@Override
  public Object getBinderValue(Service service) {
    DataResultSet drs = getResultSet(this.name, service);

    if (this.required && drs == null) {
      throw new IllegalArgumentException("ResultSet " + this.name + " is required.");
    }

    return drs;
  }
@Override
  public Object getBinderValue(Service service) {
    DataResultSet drs = getResultSet(this.name, service);

    if (this.required && drs == null) {
      throw new IllegalArgumentException("ResultSet " + this.name + " is required.");
    }

    return drs;
  }
{@inheritDoc}