static int largestSum ( int n ) {
  return ( 2 * ( ( int ) Math . pow ( 10 , n ) - 1 ) ) ;
}

static int largestSum ( int n ) { return ( 2 * ( ( int ) Math . pow ( 10 , n ) - 1 ) ) ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (return_statement (parenthesized_expression (binary_expression left: (decimal_integer_literal) right: (parenthesized_expression (binary_expression left: (cast_expression type: (integral_type) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal) (identifier)))) right: (decimal_integer_literal))))))))