Actifsource - #6896 Validate empty accessor codesnippet

Release: Actifsource V11.4.0

If the language of a StructuredCodeSnippetRelation is defined on CMinusAccessor, the codesnippet must not be defined empty.

Enable cMinusAccessor:

6896 1 Accessor1

Empty accessor codesnippet:

6896 2 Accessor2