@Override
	public CharDataType getOppositeSignednessDataType() {
		return isSigned() ? UnsignedCharDataType.dataType.clone(getDataTypeManager())
				: SignedCharDataType.dataType.clone(getDataTypeManager());
	}
Returns the C style data-type declaration for this data-type. Null is returned if no
appropriate declaration exists.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/data/CharDataType.java