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@import ObjectiveC;

@interface MyClass : NSObject

@end

@implementation MyClass

+ (void)methodA {
    Method mb = class_getClassMethod([self class], @selector(methodB:));
    BOOL (* action)(id, Method, NSNumber *) = (BOOL (*)(id, Method, NSNumber *))method_invoke;
    BOOL returnValue = action([self class], mb, [NSNumber numberWithBool:YES]);

    method_getNumberOfArguments(mb); // number of args
    method_getArgumentType(mb, 2, dst, 256); // arg type
}

+ (BOOL)methodB:(NSNumber *)a {
    return [a boolValue];
}

@end