static long inverse ( long n ) {
  return power ( n , mod - 2 , mod ) ;
}

static long inverse ( long n ) { return power ( n , mod - 2 , mod ) ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (return_statement (method_invocation name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (identifier) right: (decimal_integer_literal)) (identifier))))))