#import <Foundation/Foundation.h>

void performSelector0(id target, NSString* selectorName);
void performSelectorInNewThread0(id target, NSString* selectorName);
void performSelector1(id target, NSString* selectorName, id arg1);
void performSelectorInNewThread1(id target, NSString* selectorName, id arg1);
void performSelector2(id target, NSString* selectorName, id arg1, id arg2);
void performSelectorInNewThread2(id target, NSString* selectorName, id arg1, id arg2);
void setProperty(id target, NSString* propertyName, id value);