/guava/guava/src/com/google/common/hash/ChecksumHashFunction.java
checksum.update( bytes, off) ;
checksum.update ( bytes, off, len ) ;
@Override protected void update(byte b) { checksum.update(b); } @Override protected void update(byte[] bytes, int off, int len) { <extra_id_0> } @Override public HashCode hash() { long value = checksum.getValue(); if (bits == 32) { return HashCode.fromInt((int) value);