public boolean isAllZeroes() {
			if (simpleBlock != null) {
				for (byte element : simpleBlock) {
					if (element != 0) {
						return false;
					}
				}
			}
			if (nestedBlock != null) {
				for (int i = 0; i < nestedBlock.length; ++i) {
					if (!nestedBlock[i].isAllZeroes()) {
						return false;
					}
				}
			}
			return true;
		}
@return true if this DataBlock only represents zero bytes
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/omf/omf/OmfIteratedData.java