def length(options):
assert_equals(len(options.constructor()), <NUM_LIT:0>)<EOL>assert_equals(len(options.constructor({'<STR_LIT:foo>': '<STR_LIT:bar>'})), <NUM_LIT:1>)<EOL>assert_equals(len(options.constructor({'<STR_LIT:foo>': '<STR_LIT:bar>', '<STR_LIT>': '<STR_LIT>'})), <NUM_LIT:2>)<EOL>
Get the length of an {cls} instance