TEST :schema collection and schema location : redefine with a group, which has a group ref to itself in the middle, group minOccurs=0, (SRC 6.1.2)
http://www.w3.org/TR/2004/REC-xmlschema-1-20041028/#Schemas
| Item | Value | 
|---|---|
| title | schR3 - schR3 | 
| name | schR3 | 
| source | ../schR3_a.xsd | 
| schemaName | ../schR3_a.xsd | 
| keywords | schema negative | 
| package | javasoft.sqe.tests.schema.schr3_a |