cdm/src/main/java/ucar/ma2/ArrayInt.java
static ArrayInt factory(Index index, boolean isUnsigned) {
    return ArrayInt.factory(index,  isUnsigned, null);
  }
static ArrayInt factory(Index index, boolean isUnsigned) {
    return ArrayInt.factory(index,  isUnsigned, null);
  }
package private. use Array.factory()