public int getMnemonicStyle(Settings settings) {
		if (settings == null) {
			return ASSEMBLY;
		}
		Long value = settings.getLong(MNEMONIC);
		if (value == null) {
			return ASSEMBLY;
		}
		int style = (int) value.longValue();
		if ((style < 0) || (style > CSPEC)) {
			style = ASSEMBLY;
		}
		return style;
	}
Returns the format based on the specified settings
@param settings the instance settings.
@return the mnemonic style (DEFAULT, ASSEMBLY, CSPEC).  
The ASSEMBLY style is returned if no setting has been made.
The DEFAULT style corresponds to the use of {@link DataType#getName()}.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/data/DataTypeMnemonicSettingsDefinition.java