Bug 138562 Splite extendsexcpetion to seperate sub class
The suggestion is Parent invalid Cycle extends Different type extends Not top level extends
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/i18n/MessageConstants.java
public static final String META_DATA_READER_EXCEPTION_META_DATA_ERROR = "Error.MetaDataReaderException.META_DATA_ERROR"; 
	
	public static final String LIBRARY_EXCEPTION_LIBRARY_NOT_FOUND = "Error.LibraryException.LIBRARY_NOT_FOUND"; 
	public static final String LIBRARY_EXCEPTION_DUPLICATE_LIBRARY_NAMESPACE = "Error.LibraryException.DUPLICATE_LIBRARY_NAMESPACE"; 
	public static final String LIBRARY_EXCEPTION_LIBRARY_INCLUDED_RECURSIVELY = "Error.LibraryException.LIBRARY_INCLUDED_RECURSIVELY"; 
	public static final String LIBRARY_EXCEPTION_LIBRARY_HAS_DESCENDENTS = "Error.LibraryException.LIBRARY_HAS_DESCENDENTS"; 
	public static final String LIBRARY_EXCEPTION_LIBRARY_ALREADY_INCLUDED = "Error.LibraryException.LIBRARY_ALREADY_INCLUDED"; 
	
	
	public static final String STYLE_SHEET_EXCEPTION_STYLE_SHEET_NOT_FOUND = "Error.StyleSheetException.STYLE_SHEET_NOT_FOUND"; 
	public static final String STYLE_SHEET_EXCEPTION_SYNTAX_ERROR = "Error.StyleSheetException.SYNTAX_ERROR"; 
	
	
	public static final String STYLE_SHEET_PARSER_EXCEPTION_RULE_NOT_SUPPORTED = "Error.StyleSheetParserException.RULE_NOT_SUPPORTED"; 
	public static final String STYLE_SHEET_PARSER_EXCEPTION_STYLE_NOT_SUPPORTED = "Error.StyleSheetParserException.STYLE_NOT_SUPPORTED"; 
	public static final String STYLE_SHEET_PARSER_EXCEPTION_PROPERTY_NOT_SUPPORTED = "Error.StyleSheetParserException.PROPERTY_NOT_SUPPORTED"; 
	public static final String STYLE_SHEET_PARSER_EXCEPTION_INVALID_SHORT_HAND_CSSPROPERTY_VALUE = "Error.StyleSheetParserException.INVALID_SHORT_HAND_CSSPROPERTY_VALUE"; 
	public static final String STYLE_SHEET_PARSER_EXCEPTION_INVALID_SIMPLE_CSSPROPERTY_VALUE = "Error.StyleSheetParserException.INVALID_SIMPLE_CSSPROPERTY_VALUE"; 
		
	public static final String TEMPLATE_EXCEPTION_INVALID_TEMPLATE_ELEMENT_TYPE = "Error.TemplateException.INVALID_TEMPLATE_ELEMENT_TYPE"; 
	public static final String TEMPLATE_EXCEPTION_TRANSFORM_TO_REPORT_ITEM_FORBIDDEN = "Error.TemplateException.TRANSFORM_TO_REPORT_ITEM_FORBIDDEN"; 
	public static final String TEMPLATE_EXCEPTION_TRANSFORM_TO_DATA_SET_FORBIDDEN = "Error.TemplateException.TRANSFORM_TO_DATA_SET_FORBIDDEN"; 
	public static final String TEMPLATE_EXCEPTION_CREATE_TEMPLATE_ELEMENT_FORBIDDEN = "Error.TemplateException.CREATE_TEMPLATE_ELEMENT_FORBIDDEN"; 
	public static final String TEMPLATE_EXCEPTION_TEMPLATE_ELEMENT_NOT_SUPPORTED = "Error.TemplateException.TEMPLATE_ELEMENT_NOT_SUPPORTED"; 
	public static final String TEMPLATE_EXCEPTION_REVERT_TO_TEMPLATE_FORBIDDEN = "Error.TemplateException.REVERT_TO_TEMPLATE_FORBIDDEN"; 
		
}