private static boolean has4PrimeFactors ( int n ) {
  return countDistinctPrimeFactors ( n ) == 4 ;
}

private static boolean has4PrimeFactors ( int n ) { return countDistinctPrimeFactors ( n ) == 4 ; }
(method_declaration (modifiers) type: (boolean_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (return_statement (binary_expression left: (method_invocation name: (identifier) arguments: (argument_list (identifier))) right: (decimal_integer_literal)))))