CodeSOD: Yes, No, NO NO NO NO

The code defines functions for converting between booleans and a custom "YesNoType" class, which essentially represents a boolean value stored as a string. The "toYesNo(String)" function maps "Y" to "Yes" and other values to "No," introducing potential inconsistency since it always returns "Yes" regardless of the input string. The "toYesNo(boolean)" function cannot directly construct a "YesNoType" from a boolean, which is considered a flaw. The "fromYesNo(YesNoType)" function checks if the "YesNoType" matches "Yes" (case-insensitive) and returns "Yes" accordingly. The "isYesNo(YesNoType)" function converts the "YesNoType" to a boolean, but unnecessarily declares a local variable and could be simplified. The code's reliance on a custom "YesNoType" instead of using booleans is seen as a questionable design choice. The "toYesNo(String)" function allows setting a "YesNoType" with "Y" but always returns "Yes," creating inconsistent values. The "toYesNo(boolean)" function cannot create a "YesNoType" directly from a boolean, a significant drawback. The "fromYesNo(YesNoType)" function seems unnecessary with proper design. Overall, the code's use of "YesNoType" as a string-based representation of booleans is considered a poor design decision.