public boolean isSet() {
		int num = filterFlags.length;
		for (int i = 0; i < num; i++) {
			if (filterFlags[i] != IGNORE) {
				return true;
			}
		}
		return false;
	}
Determines if at least one of the filter types is set to REPLACE or MERGE.
@return true if at least one type is set.
Ghidra/Features/Base/src/main/java/ghidra/program/util/ProgramMergeFilter.java