转换类型可分为三类：方法调用转换、字段访问转换和新对象转换。

These fall into three categories: method call transformations, field access transformations, and a new object transformation.

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在FieldSetEditor中，我实现了匹配字段访问的方法签名。

In FieldSetEditor, I implement the method signature that matches field accesses.

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在第2部分，我展示了无论是对于字段访问还是方法调用，反射都比直接代码慢很多倍。

Back in Part 2, I showed how reflection is many times slower than direct code for both field access and method calls.

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