TEST :Syntax Checking for Attribute Declaration (ID) : Test attributeGroup declaration: self referencing, name="test", has child attributeGroup that also has, parent is complexType, ref='test'
http://www.w3.org/TR/2004/REC-xmlschema-1-20041028/#cAttribute_Group_Definitions
| Item | Value | 
|---|---|
| title | attgC020 - attgC020 | 
| name | attgC020 | 
| source | ../attgC020.xsd | 
| schemaName | ../attgC020.xsd | 
| keywords | schema negative | 
| package | javasoft.sqe.tests.attributegroup.attgc020 |