为什么使用dot-syntax两次调用此语句的LHS？

This test will fail:

此测试将失败:

#import "GTMSenTestCase.h"

@interface Person : NSObject
@property (readonly) NSString *name;
@end
@implementation Person
- (NSString *)name { return @"Nick"; }
@end

@interface TemplateUnitTest : GTMTestCase @end

@implementation TemplateUnitTest

static BOOL called = NO;
- (Person *)get {
  if (called) { STFail(nil); }
  called = YES;
  return [[Person new] autorelease];
}

- (void)testPropertyMakesThingGetSentTwice {
  NSString *s = [[self get].name stringByAppendingString:@"foo"];
  STAssertEqualObjects(@"Nickfoo", s, nil);
}

@end
#import "GTMSe