[BioC] Get all 3'utr and 5'utr region from GenomicFeatures

[Fabrice Tourre]

Dear list,

How can I get all 3'utr and 5'utr region from GenomicFeatures of Human?
There are fiveUTRsByTranscript, threeUTRsByTranscript methods in
GenomicFeatures. But how can I get these regions?

Thanks.