void OtherInstanceProperty2(SomeClassThatContainsADisposableProperty someObj)
{
someObj.Reader = new StreamReader("foobaz.xml"); //property in param, no locals
}
void OtherInstanceProperty1(SomeClassThatContainsADisposableProperty someObj)
{
var reader = new StreamReader("foobaz.xml");
someObj.Reader = reader; //property in param
}