b.setAuthorEmail(null);
b.setCommitterTimestamp(-1000);
b.setCommitterTimeZoneOffset(-5);
b.setParentIds(ImmutableList.of(parentId1, ObjectId.NULL));
commit2 = b.build();
Object boolArray = new boolean[] { true, false, true, true, false };
Object byteArray = new byte[] { 100, 127, -110, 26, 42 };
Object charArray = new char[] { 'a', 'b', 'c', 'd', 'e' };
Object doubleArray = new double[] { 1.5, 1.6, 1.7, 1.8 };