+ * Gets the value of the matrix property.
+ *
+ * <p>
+ * 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 <CODE>set</CODE> method for the matrix property.
+ *
+ * <p>
+ * For example, to add a new item, do as follows:
+ * <pre>
+ * getMatrix().add(newItem);
+ * </pre>
+ *
+ *
+ * <p>
+ * Objects of the following type(s) are allowed in the list
+ * {@link MatrixType }
+ *
+ *
+ */
+ public List<MatrixType> getMatrix() {
+ if (matrix == null) {
+ matrix = new ArrayList<MatrixType>();
+ }
+ return this.matrix;
+ }
+
+ /**