static int gcd ( int a , int b ) {
  if ( b == 0 ) return a ;
  return gcd ( b , a % b ) ;
}

static int gcd ( int a , int b ) { if ( b == 0 ) return a ; return gcd ( b , a % b ) ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (return_statement (identifier))) (return_statement (method_invocation name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (identifier) right: (identifier)))))))