TEST :Syntax Checking for simpleType Declaration : content with list then union
http://www.w3.org/TR/2004/REC-xmlschema-1-20041028/#Simple_Type_Definitions
| Item | Value | 
|---|---|
| title | stB020 - stB020 | 
| name | stB020 | 
| source | ../stB020.xsd | 
| schemaName | ../stB020.xsd | 
| keywords | schema negative | 
| package | javasoft.sqe.tests.simpletype.stb020 |