public static int[] getPrimaryTypes() {
		int[] pt = new int[NUM_PRIMARY_TYPES];
		for (int i = 0; i < NUM_PRIMARY_TYPES; i++) {
			pt[i] = 1 << i;
		}
		return pt;
	}
Gets all the valid individual types of differences for this filter.
@return an array containing all the currently defined primary difference 
types.
Ghidra/Features/Base/src/main/java/ghidra/program/util/ProgramMergeFilter.java