财政部原部长楼继伟在近日进一步的探讨财政体系在将来发展问题的导向，对此已经提出相关的选择方案，宣称房地产税需要选择合适的地方作为地方税的税种，在经济恢复正常增长趋势之后，需要尽快的展开地方税的试点。已
I\'m trying to define a structural type defining any collection that has an \"add\" method (for instance, a java collection). Using this, I want to define a few higher order functions that operate on
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