Bug 196257 NPE when call ArgumentInfoList.argumentsIterator()
When call ArgumentInfoList.argumentsIterator(), it will throw NPE sometimes. This is caused the inner "arguments" member may not initialized when call this method.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/scripts/MethodInfo.java
*/
	public String getName( )
	{
		return method.getName( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.api.metadata.IMethodInfo#getJavaDoc()
	 */
	public String getJavaDoc( )
	{
		return StringUtil.EMPTY_STRING;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.api.metadata.IMethodInfo#getReturnType()
	 */
	public String getReturnType( )
	{
		return method.getReturnType( ).getName( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.api.metadata.IMethodInfo#isConstructor()
	 */
	public boolean isConstructor( )
	{