public static int kthgroupsum ( int k ) {
  return k * k * k ;
}

public static int kthgroupsum ( int k ) { return k * k * k ; }
(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: (binary_expression left: (identifier) right: (identifier)) right: (identifier)))))