static boolean oldContextDataExists(DBHandle dbh) {
		for (Table table : dbh.getTables()) {
			if (table.getName().startsWith(OLD_CONTEXT_TABLE_PREFIX)) {
				return true;
			}
		}
		return false;
	}
Constructs a new ProgramContextDB object
@param dbHandle the handle to the database.
@param errHandler the error handler
@param language the processor language
@param addrMap the address map.
@param lock the program synchronization lock
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/register/OldProgramContextDB.java