public static int getVbtEntrySize(DataTypeManager dtm) {
		return dtm.getDataOrganization().getIntegerSize();
	}
Validates a Vtable name and returns the encoded offset value
@param name the name
@return the offset or {@code null} if invalid name
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/gclass/ClassUtils.java