question: private static IAbstractNode convertOr ( final CommonTree ast ) throws RecognitionException { final List < IAbstractNode > children = new ArrayList < IAbstractNode > ( ) ; for ( final Object childObject : ast . getChildren ( ) ) { children . add ( convert ( ( CommonTree ) childObject ) ) ; } return new CAbstractOrExpression ( children ) ; }
target:  Converts an ANTRL OR AST into a filter OR AST.