TEST :Syntax Checking for Attribute Declaration (ID) : attributeGroup with two attributeGroup as children, both has ref="foo"
http://www.w3.org/TR/2004/REC-xmlschema-1-20041028/#cAttribute_Group_Definitions
| Item | Value | 
|---|---|
| title | attgC044 - attgC044 | 
| name | attgC044 | 
| source | ../attgC044.xsd | 
| schemaName | ../attgC044.xsd | 
| keywords | schema negative | 
| package | javasoft.sqe.tests.attributegroup.attgc044 |