private RootSegmentBase validate ( ) { ContainerSegmentBase root = containerStack . peekFirst ( ) ; if ( ! ( root instanceof RootSegmentBase ) ) { throw new MustacheException ( MustacheProblem . COMPILE_INVALID_TEMPLATE , "Incorrect last container segment on the stack: %s" , containerStack . peekFirst ( ) . toString ( ) , line ) ; } return ( RootSegmentBase ) root ; }
Validate the compiled template .