static int calculateSum ( int l , int r ) {
  int sum = fib ( r + 2 ) - fib ( l + 1 ) ;
  return sum ;
}

static int calculateSum ( int l , int r ) { int sum = fib ( r + 2 ) - fib ( l + 1 ) ; return sum ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (method_invocation name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal)))) right: (method_invocation name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal))))))) (return_statement (identifier))))