public static void main ( String [ ] args ) {
  char [ ] set = {
    'a' , 'b' , 'c' };
    printPowerSet ( set , 3 ) ;
  }
  
public static void main ( String [ ] args ) { char [ ] set = { ' a ' , ' b ' , ' c ' } ; printPowerSet ( set , 3 ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_initializer (character_literal) (character_literal) (character_literal)))) (expression_statement (method_invocation name: (identifier) arguments: (argument_list (identifier) (decimal_integer_literal))))))