@staticmethod<EOL><INDENT>def validate(options):<DEDENT>
try:<EOL><INDENT>if options.backends.index('<STR_LIT>') > options.backends.index('<STR_LIT>'):<EOL><INDENT>raise Exception("<STR_LIT>")<EOL><DEDENT><DEDENT>except ValueError:<EOL><INDENT>raise Exception("<STR_LIT>")<EOL><DEDENT>
Validates the application of this backend to a given metadata