private static String solve ( int k ) {
  StringBuilder sb = new StringBuilder ( ) ;
  String edge = makeEdge ( numRowsWithoutBack + 2 ) ;
  sb . append ( edge + "\n" ) ;
  ;
}

private static String solve ( int k ) { StringBuilder sb = new StringBuilder ( ) ; String edge = makeEdge ( numRowsWithoutBack + 2 ) ; sb . append ( edge + " \n " ) ; ; }
(method_declaration (modifiers) type: (type_identifier) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list)))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (string_literal)))))))