question: public static List < BigInteger > embeddedSelectorToPartitions ( String selector , String type , DataPartitioner partitioner ) throws PIRException { List < BigInteger > parts ; int partitionBits = partitioner . getBits ( type ) ; if ( partitionBits > 32 ) { int hashedSelector = KeyedHash . hash ( "aux" , 32 , selector , "MD5" ) ; parts = partitioner . toPartitions ( hashedSelector , PrimitiveTypePartitioner . INT ) ; } else { parts = partitioner . toPartitions ( selector , type ) ; } return parts ; }
target:  Method to convert the given selector into the extracted BigInteger partitions