public void setIsError(boolean isError) {
		//            if ( isError && !this.isError ) {
		//                warn(); // only warn if we were not already in an error situation
		//            }
		this.isError = isError;
		update();
	}
Returns the default text.  This is useful to know what the original text is after the user
has edited the text.
@return the default text
Ghidra/Framework/Docking/src/main/java/docking/widgets/textfield/GFormattedTextField.java