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How to set enum link with default = null in ecore and gen model?

I have an Eclass Vehiclethat has an enum attribute BreakType breakType.

BreakType defined in the same Ecore model as:

BreakType{
    DRUM(0), DISC(1), BLADE(2)
}

I want to set the BreakTypedefault attribute to null. To do this, I set the following properties for the attribute BreakType→

DefaultLiteralValue: // it blank
Unsettable: True

Properties of BreakType enum
Default Value : DRUM=0 // this is shown in editor UI even If i remove it from xml.

What I get after generating the gene model and code from it,

BreakType breakType = DRUM // attribute set with default value

How can I set its default value?

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1 answer

, . defaultValueLiteral, EMF , . , .

. , , , :

void unsetAttribute();
boolean isSetAttribute();

, null.

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