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Test := String clone
//==> 
Test = "Hello"
//==> Hello
Test type
//==> Sequence
Test size
//==> 5
Test = 7
//==> 7
Test type
//==> Number
Test size
//
//  Exception: Number does not respond to 'size'
//  ---------
//  Number size                          Command Line 1
//
Number size := method(self)
//==> method(
//    self
//)
Test size
//==> 7
// Wait... now it works!