protected String getCharString(long val, int byteCnt) {
		BigInteger v = BigInteger.valueOf(val);
		byte[] bytes = v.toByteArray();
		if (bytes.length != byteCnt) {
			byte[] newBytes = new byte[byteCnt];
			System.arraycopy(bytes, 0, newBytes, 0, Math.min(byteCnt, bytes.length));
			bytes = newBytes;
		}
		return StringUtilities.toQuotedString(bytes);
	}
Test MNEMONIC data setting
@param testDefaultSetting if true test default setting, else test instance setting for data2
@param insideStruct data are inside two structure instances
@param commonStruct data structures are the same type
@param data1 data at some location with same type as data2
@param data2 data at current location
@throws Exception
Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/data/AbstractDataActionTest.java