@Override
		public boolean hasPrevious() throws IOException {
			return it.hasPrevious();
		}
Returns a record matching the current data base schema from the version 0 record.
@param recV0 the record matching the version 0 schema.
@return a current comment record.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/code/CommentsDBAdapterV0.java