code: private ValidationResult checkContigLocation(Entry entry) {
  		List<Location> locations = entry.getSequence().getContigs();
  		Long contigSequenceCoverLength = 0L;
  		Long sequenceLength = entry.getSequence().getLength();
  		for (Location location : locations) {
  			contigSequenceCoverLength += location.getLength();
  
  		}
  
  		if (!sequenceLength.equals(contigSequenceCoverLength)) {
  
  			result.append(EntryValidations.createMessage(entry.getSequence().getContigs()
  					.get(0).getOrigin(), Severity.ERROR,
  					MESSAGE_ID_INVALID_CONTIG_LOCATIONS,
  					contigSequenceCoverLength, sequenceLength));
  		}
  
  		return result;
  	}
docs: /*
  checks the CONTIG/CO line locations cover the sequence length