Bug 163018 An error extension will lead the report contain chart can't be opened and can not new a report.
Details: An error extension will lead the report contain chart can't open In org.eclipse.birt.report.tests.model has an error extension. When run the birt use workbenck, the report contain chart can't be opened and it can not new a report.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/ObjectDefn.java
}
	/**
	 * Gets the internal name for the element.
	 * 
	 * @return Returns the name.
	 */
	public String getName( )
	{
		return name;
	}
	/**
	 * Sets the internal name for this element definition. Must be done once,
	 * while building the dictionary.
	 * 
	 * @param theName
	 *            The name to set.
	 */
	void setName( String theName )
	{
		name = theName;
	}
	/**
	 * Adds a property definition. Properties are keyed by their internal name.
	 * The name must be non-empty, and each property must be unique. If these
	 * invariants do not hold, then this is a bad build.
	 * 
	 * @param property
	 *            The system property to add.
	 * @throws MetaDataException
	 *             if property name duplicates within the object definition.