public static boolean isZeroByteDataType(DataType dt) {
		if (VoidDataType.dataType.isEquivalent(dt)) {
			return true;
		}
		if (!dt.isZeroLength() && dt instanceof Array) {
			dt = DataTypeUtilities.getArrayBaseDataType((Array) dt);
		}
		return dt.isZeroLength();
	}
Returns a value specified in a {@link Language} definition via a
<pre>&lt;external_name tool="<b>name</b>" name="<b>value</b>"/&gt;</pre>
entry.

@param lang {@link Language} to query
@param name name of the value
@return String value
@throws IOException
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/dwarf/DWARFUtil.java