def get_instance(name):
if name in instances:<EOL><INDENT>return instances.get(name)<EOL><DEDENT>raise KeyError("<STR_LIT>" % name)<EOL>
wrapper function to retrieve instance

Args:
    name (str): instance name - identical to appliction class handle value

Returns:
    application instance with the matching name

Raises:
    KeyError: No instance found for specified name