returns root . concode_field_sep ComponentNode root concode_elem_sep IteratorFactory treeIteratorFactory concode_field_sep int item concode_elem_sep ExpressionTree left concode_elem_sep boolean isNull concode_elem_sep ExpressionTree right concode_elem_sep void accept concode_elem_sep Iterator<ExpressionTree> makeIterator
ComponentNode function ( ) { return root ; }