static int parity ( int a ) {
  return a % 3 ;
}

static int parity ( int a ) { return a % 3 ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (return_statement (binary_expression left: (identifier) right: (decimal_integer_literal)))))