static boolean isEuclid ( int n ) {
  if ( s . contains ( n ) ) return true ;
  else return false ;
}

static boolean isEuclid ( int n ) { if ( s . contains ( n ) ) return true ; else return false ; }
(method_declaration (modifiers) type: (boolean_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (if_statement condition: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) consequence: (return_statement (true)) alternative: (return_statement (false)))))