TEST :Syntax Checking (id, ref) : Test ref: circular ref is not allowed out side of redefine, parent is choice, ref='the root parent group's name'
http://www.w3.org/TR/2004/REC-xmlschema-1-20041028/#cModel_Group_Definitions
| Item | Value | 
|---|---|
| title | groupB013 - groupB013 | 
| name | groupB013 | 
| source | ../groupB013.xsd | 
| schemaName | ../groupB013.xsd | 
| keywords | schema negative | 
| package | javasoft.sqe.tests.group.groupb013 |