The implementation module doesn't conform to its interface.

#2175   Compile-time error

The implementation module doesn't conform to its interface.

Additional Information

The implementation module exports X 'Y', which is not a part of the module's interface.
The implementation module exports a conversion-function which is not a part of the module's interface.

Explanation

An implementation module is not allowed to export any declarations which are not already exported by the interface module it implements.