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- org.eclipse.acceleo.engine.AcceleoEvaluationException: Undefined argument a.type.instanceClassName of invocation at line 0 in Module generate for block toXMLtype(a.type.instanceClassName). Last recorded value of self was org.occiware.clouddesigner.occi.impl.AttributeImpl@235ebba9 (name: occi.core.summary, mutable: true, required: false, default: null, description: A summarising description of the Resource instance., multiple_values: false). Problem found while generating the file '/occiware/workspace/dev-tools/eclipse/samples/org.occiware.linkeddata/src-gen/xml/core.xml'. at generate.attribute(Attribute)