### Question:
Federation { @Override public String toString() { return String.format("%d of %d signatures federation", getNumberOfSignaturesRequired(), publicKeys.size()); } Federation(List<UldECKey> publicKeys, Instant creationTime, long creationBlockNumber,  NetworkParameters uldParams); List<UldECKey> getPublicKeys(); int getNumberOfSignaturesRequired(); Instant getCreationTime(); NetworkParameters getUldParams(); long getCreationBlockNumber(); Script getRedeemScript(); Script getP2SHScript(); Address getAddress(); int getSize(); Integer getPublicKeyIndex(UldECKey key); boolean hasPublicKey(UldECKey key); boolean hasMemberWithUscAddress(byte[] address); @Override String toString(); @Override boolean equals(Object other); @Override int hashCode();  }### Answer:
@Test public void testToString() { Assert.assertEquals("4 of 6 signatures federation", federation.toString()); }