public static long getNumPatties ( int level ) {
  return pow ( 2 , level + 1 ) - 1 ;
}

public static long getNumPatties ( int level ) { return pow ( 2 , level + 1 ) - 1 ; }
(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: (method_invocation name: (identifier) arguments: (argument_list (decimal_integer_literal) (binary_expression left: (identifier) right: (decimal_integer_literal)))) right: (decimal_integer_literal)))))