private void doSetString(String str) {
		this.str = str;
		try {
			bytes = (str != null ? str.getBytes(ENCODING) : null);
		}
		catch (UnsupportedEncodingException e) {
			throw new AssertException(e);
		}
	}
Construct a String field with an initial value of s.
@param str initial string value or null
@param immutable true if field value is immutable
Ghidra/Framework/DB/src/main/java/db/StringField.java