是否可以在Objective-C中将方法声明为私有？

// MyClass.h
#import<Foundation/Foundation.h>

@interface MyClass : NSObject
- (void)publicMethod;
@end

// MyClass.m
#import "MyClass.h"

@interface MyClass ()
- (void)privateMethod;
@end

@implementation MyClass

- (void)publicMethod {
    [self privateMethod];
}

- (void)privateMethod {
    // Private method implementation
}

@end