in beam-collector/src/main/java/com/google/collector/aggregation/ExtractKey.java [55:63]
private long computeForDeprecation(DeprecationReport deprecationReport) {
Adler32 adler32 = new Adler32();
adler32.update(deprecationReport.getIdBytes().toByteArray());
adler32.update(deprecationReport.getSourceFileBytes().toByteArray());
adler32.update(deprecationReport.getLineNumber());
adler32.update(deprecationReport.getColumnNumber());
return adler32.getValue();
}