Umple W1513 Mixset Used With No Declaration
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W1513 Mixset Used With No Declaration
Warning reporting that a mixset use statement tries to activate a mixset that has not been declared.
If you encounter this warning, you can easily comment out the use statement that causes this warning, or you can declare the mixset with an empty body.
Example
// There are two options to get rid of this warning:
//option1: comment out the use statement below:
use M1;
// option2: remove the comment below to declare M1 with empty body :
//mixset M1 { }
Load the above code into UmpleOnline