BlahSpec.m

ClearMocks(mockPackage, mockAsset)

SpecHelper.h

#define ClearMocks(firstMock, ...) [SpecHelper clearMocks:firstMock, nil]

@interface SpecHelper : NSObject
+ (void)clearMocks:(id)firstMock, ...;
@end

SpecHelper.m

#import "SpecHelper.h"

@implementation SpecHelper
+ (void)clearMocks:(id)firstMock, ... {
    id mock;
    va_list args;

    if (firstMock) {
        firstMock = nil; /* Handled separately */
        va_start(args, firstMock);
        while((mock = va_arg(args, id)))
            mock = nil;
        va_end(args);
    }
}
@end