+ /**
+ * Returns features at the specified aligned column on the given sequence.
+ * Non-positional features are not included. If the column has a gap, then
+ * enclosing features are included (but not contact features).
+ *
+ * @param sequence
+ * @param column
+ * (1..)
+ * @return
+ */
+ List<SequenceFeature> findFeaturesAtColumn(SequenceI sequence, int column)