+ * This accessor method returns a reference to the live list,
+ * not a snapshot. Therefore any modification you make to the
+ * returned list will be present inside the JAXB object.
+ * This is why there is not a set
method for the contactmatrix property.
+ *
+ *
+ * For example, to add a new item, do as follows: + *
+ * getContactmatrix().add(newItem); + *+ * + * + *
+ * Objects of the following type(s) are allowed in the list
+ * {@link MatrixType }
+ *
+ *
+ */
+ public List