static void inorder ( Node node ) {
  if ( node == null ) return ;
  int total = node . children . length ;
  for ( int i = 0 ;
  i < total - 1 ;
  i ++ ) inorder ( node . children [ i ] ) ;
  System . out . print ( "" + node . data + " " ) ;
  inorder ( node . children [ total - 1 ] ) ;
}

static void inorder ( Node node ) { if ( node == null ) return ; int total = node . children . length ; for ( int i = 0 ; i < total - 1 ; i ++ ) inorder ( node . children [ i ] ) ; System . out . print ( " " + node . data + " ▁ " ) ; inorder ( node . children [ total - 1 ] ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier))) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (null_literal))) consequence: (return_statement)) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (field_access object: (field_access object: (identifier) field: (identifier)) field: (identifier)))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal))) update: (update_expression (identifier)) body: (expression_statement (method_invocation name: (identifier) arguments: (argument_list (array_access array: (field_access object: (identifier) field: (identifier)) index: (identifier)))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (string_literal) right: (field_access object: (identifier) field: (identifier))) right: (string_literal))))) (expression_statement (method_invocation name: (identifier) arguments: (argument_list (array_access array: (field_access object: (identifier) field: (identifier)) index: (binary_expression left: (identifier) right: (decimal_integer_literal))))))))