- * Answers true if the sequence feature type is 'transcript' (or a subtype of
- * transcript in the Sequence Ontology), and the ID of the feature is the
- * transcript we are retrieving
+ * Answers a list of sequence features (if any) whose type is 'transcript' (or
+ * a subtype of transcript in the Sequence Ontology), and whose ID is the
+ * accession we are retrieving.
+ * <p>
+ * Note we also include features of type "NMD_transcript_variant", although
+ * not strictly 'transcript' in the SO, as they used in Ensembl as if they
+ * were.